BL4 Legendary Assault Rifles, Complete AR Guide

Okay so the Vladof Monarch is basically the best AR in BL4 and tbh it's not even close, bipod mode gives you x4 projectiles with extreme damage and it literally deletes bosses especially on FL4K, I've seen this thing melt Graveward in seconds and it's honestly kind of disgusting how fast it kills stuff. It drops from Valkyrie Squad in Guardian Takedown and you know it's worth the farm. Then there's the Atlas OPQ System which honestly feels like cheating sometimes because the tracker dart plus homing smart bullets means you barely have to aim, just tag an enemy and hold the trigger while bullets curve around corners and all that, high damage, full-auto, excellent for clearing rooms, drops from Replay the Cartels event which is seasonal so definately grab it when you can. And the Jakobs Bekah is a 4-pellet AR with crazy high damage per shot and crit ricochet that I'm not 100% sure about the math on but it hits like an absolute truck I mean the numbers are kind of wild. Quest reward from Hammerlock Hunts and it's probably the strongest AR with FL4K if you can aim well but if you can't hit your crits you're gonna have a bad time.

The Jakobs Rowan's Call is my personal favorite for mobbing ngl because ricochet on crit and ammo return to magazine means you can just keep firing forever, literally never reload if you're hitting your shots, it's so satisfying and I've done entire Slaughter Shaft runs without reloading once. Drops from Rampager and tbh the farm isn't that bad. Vladof Gatling Gun spins up for increasing fire rate and has an underbarrel attachment for alt fire that kind of melts everything when you get it going, drops from GenIVIV. Also Dahl Soulrender is super underrated imo because the burst fire plus homing skull projectiles on kill add a ton of passive damage you don't even have to think about, excellent add-clear, drops from a specific boss and I recieved one with a god roll anoint that carried me through most of Mayhem 10.

Monarch + FL4K Fade Away is honestly the strongest boss-killing combo in the game and I've died way less since I figured this out, the damage numbers are just stupid. OPQ System is best on Zane with speed/drone builds and pretty much everything melts. Jakobs ARs shine on FL4K crit builds with Megavore and you get these crazy ricochet chains that bounce between enemies forever. Vladof underbarrel explosions sync with Moze splash damage skills and the damage numbers get kind of ridiculous tbh. But also Amara with Rowan's Call is a sleeper combo that nobody talks about and it clears rooms faster than most SMG setups, you get the idea, and don't sleep on the Damned with Zane's barrier builds either because the shield stacking gets kind of broken when you have the right class mod. Also the Breath of the Dying is a seperate category of mobbing beast, corrosion orbs chain kill entire groups and I've literally cleared rooms without firing my gun.

So here's the thing about ARs in BL4 and I've learned this the hard way after like 500 hours in this game, they don't have the burst of a shotgun and tbh they don't have the range of a sniper and honestly they don't have the raw DPS of an SMG up close but what they do have is consistency, an AR literally never lets you down and you can take a Monarch into any content in the game and it performs, bossing mobbing whatever that versatility is why I always have an AR in at least one slot and realistically that's not changing anytime soon, you know what I mean. The ammo economy is another huge factor nobody talks about because SMGs burn through ammo in seconds and shotguns run dry after two encounters but ARs just keep going and going and on higher Mayhem levels where every bullet counts that matters more than you'd think, I've had runs where I finished an entire Slaughter Shaft round without touching my other guns because a good AR with the right anoint just doesn't stop, it's like you're a walking turret that never runs out of bullets and everything in front of you just evaporates and the feeling of that sustained firepower is honestly why I love these weapons so much more than anything else in the game.

ARs teach you how to aim and don't punish you for missing. That's the whole deal tbh.

For new players especially, starting with ARs is the safest way to learn because they're forgiving and they don't punish you for missing a few shots. Which is more than I can say for snipers or shotguns tbh. And definately more than I can say for launchers which will get you killed if you miss at close range. Also can we talk about how satisfying a good AR feels, the consistent fire rate, the decent mag size, the way you can just keep shooting while your teammates are reloading their shotguns for the 50th time, it's honestly one of the most underrated feelings in this game and I love it and etc.

Alright the Monarch is the obvious pick and for good reason because bipod mode turns it into a bullet hose that melts bosses faster than most heavy weapons and I've literally out-DPS'd rocket launchers with this thing it's so good it's almost boring but who cares when everything dies in three seconds and I mean I've tried other bossing weapons like launchers and snipers and shotguns and none of them come close to the raw sustained damage you get from a Monarch in bipod mode with the right build which is kind of wild when you think about how ARs are supposed to be the jack of all trades not the boss deleter but here we are and I'm not complaining at all honestly, I've killed Graveward on M10 in under 10 seconds with a mediocre anoint and that's not even a good roll imagine what a perfect one does to a boss like that, you don't even see the health bar move it just disappears and you're standing there wondering if the fight even started, that's the Monarch for you and it's honestly disgusting how much damage this gun puts out. But I've found that the OPQ System is honestly the better all-rounder for general play, the homing bullets mean you don't even need to aim that precisely, you tag an enemy with the tracker dart and then just hold the trigger while watching the smart bullets curve around corners which feels like cheating sometimes and I kind of love it, definately one of those weapons that makes you feel like a god. The Bekah is a different beast entirely and I respect that about it, if you can aim well it's the highest damage per shot AR in the game but you have to hit your crits consistently or it falls off hard, it's a high skill ceiling weapon and probably not for everyone tbh, but when you land those four pellet crits on a boss weak spot the damage is just obscene and you'll wonder why you ever used anything else. For mobbing, Rowan's Call is my personal favorite ngl, the ammo return on crit means you can basically fire forever as long as you're hitting weak spots and if you pair it with FL4K's Megavore you never reload, ever, I mean literally never, it's disgusting and I love it. The Soulrender is super underrated too and I'm not sure why more people don't talk about it, it looks like a basic Dahl burst AR but the homing skulls on kill add a ton of passive damage you don't even have to think about, you get the idea, it's one of those weapons that quietly carries you through content without you even noticing or whatever. The Breath of the Dying deserves a mention here too because the corrosion orbs chain kill entire groups and on armor-heavy maps it's basically a delete button.

FL4K and the Monarch is the classic combo and honestly it's still the best, Fade Away guarantees crits, the Monarch's bipod mode multiplies projectiles, and FL4K's Megavore capstone makes every shot a potential crit even outside Fade Away, the math on this is dumb and I love it, whoever designed this interaction was either a genius or just didn't care about balance. For Zane, the OPQ System combined with his Seein' Dead class mod is basically infinite action skill uptime because every bullet that hits has a chance to activate kill skills and the OPQ fires a lot of bullets, you end up with permanent speed boosts, damage buffs, and your drone never leaves the field which is kind of ridiculous when you think about it, it's like playing the game on easy mode and I'm not even sorry. Moze makes the Gatling Gun shine and tbh this combo is so underrated, her Forge skill regenerates ammo and the Gatling Gun's spin-up mechanic means your fire rate keeps climbing while you hold the trigger, add in some fire damage boosts from her tree and you've got a budget Monarch that never runs out of bullets and pretty much never stops shooting, and if you throw in a good Blast Master class mod the damage just keeps stacking until everything is dead. Amara with Rowan's Call is a sleeper combo that I discovered way too late, the ricochet on crit chains through Ties That Bind and the elemental damage from her Fist of the Elements tree adds a ton of bonus damage to every bullet, it's not the fastest boss killer but for mobbing it clears rooms faster than most SMG setups and who knows maybe it'll get even better with future patches, definately worth trying if you're bored of the meta builds and stuff like that etc. Also I should mention FL4K with the Bekah and a Stackbot class mod because the stacking crit damage bonus applies to each of the four pellets seperately and at full stacks you're doing sniper-level damage with an AR which is honestly just wrong.

First thing. People sleep on the Monarch's bipod mode because they don't like being stationary. I get it. Standing still in BL4 feels wrong. But the damage difference is like 4x and you need to learn when to deploy and when to move, find a corner, drop the bipod, delete everything in front of you, then reposition, it's a rythm you have to learn but once you do boss fights become so much faster. Second mistake. Using ARs at the wrong range and I've died to this so many times before I figured it out, Vladof ARs have damage falloff at long range, Jakobs ARs have recoil that makes close range awkward, match your engagement distance to the manufacturer or you're basically throwing away damage and wondering why enemies feel like bullet sponges. Also stop using the Monarch at sniper range on maps like Ascension Bluff where everything is far away, you're just wasting ammo. Third thing that drives me nuts, people farm one element of an AR and call it done but the Monarch in corrosive is a completely different weapon from the Monarch in shock and different fights need different elements so farm at least two, maybe three if you can stomach the grind, your future self will thank you when you hit Mayhem 10 and everything has triple health bars. And the biggest one honestly, stop ignoring the underbarrel attachments on Vladof ARs because the shotgun underbarrel on some rolls does more burst damage than the primary fire and you're leaving a ton of damage on the table if you never use it, I didn't start using underbarrels until like 200 hours in and I felt so dumb when I realized what I was missing. Also stop reloading after every kill when you still have half a mag left, I see this constantly and it gets people killed because they're stuck in the reload animation when the next wave spawns, you get the idea, just let the mag run out naturally and swap to your secondary if you need to.

Here's something I discovered way too late and it honestly changed how I play, the Monarch's bipod spread pattern tightens after the first second of firing so if you tap-fire in bipod mode instead of holding the trigger every burst is pinpoint accurate, it turns the Monarch into a pseudo-sniper and it's absolutely disgusting, I've sniped enemies across the map with an AR that has no business being that accurate. For the OPQ System, the tracker dart has a hidden property where it refreshes the duration every time you hit the same enemy with a new dart so you can tag a boss once at the start of the fight and forget about it, the smart bullets keep tracking for the entire fight as long as you re-dart occasionally and tbh this is probably not intended but it works and I'm not complaining. The Bekah's pellets have individual crit rolls which means with FL4K's Megavore each of the four pellets can independently crit and at high Guardian Rank with crit damage bonuses a single Bekah shot can do more damage than some sniper crits, I'm not 100% sure about the exact numbers but it's definately in that ballpark and it makes you feel like a god when all four pellets crit on a boss weak spot. Another thing, Rowan's Call ricochet bullets can trigger more ricochets so it chains, fire into a dense group and the ricochets bounce between enemies creating a feedback loop of death, it's not documented anywhere but you can see it happening in the damage numbers and it's probably the most satisfying thing in the game ngl. And finally, if you're running a Moze splash build the Gatling Gun's underbarrel rocket counts as splash damage which means it procs all her splash skills, Fire in the Skag Den, Short Fuse, the works, use it and honestly it's so good you'll wonder why you ever used launchers for splash damage. Also one more thing I forgot but pre-firing before peeking cover with fast-fire-rate ARs is huge because the first few shots will be on target by the time you expose yourself, learned that from dying to bosses way too many times and stuff like that. And if you're running the Lucian's Call, the cryo version is lowkey the best because frozen enemies take bonus crit damage and the ricochet spreads the freeze, it's basically crowd control and DPS in one weapon.

Why Assault Rifles Matter in BL4

So here's my honest take on ARs in this game after putting way too many hours into BL4 and dying to pretty much every boss at least once before figuring out what actually works. Assault Rifles might not seem flashy compared to some other weapon types but they fill a crucial role in any balanced loadout and I've learned this the hard way after trying to run shotgun-only builds and getting absolutely destroyed by anything that wasn't right in my face, the key is understanding when to pull them out because ARs aren't for every situation but in the right scenario they outperform everything else and it's kind of beautiful when it clicks. Too many players stick to one weapon type the whole game and wonder why certain enemies feel like bullet sponges and tbh I was guilty of this too when I first started playing, I ran a full Jakobs loadout for like 80 hours because I liked the crit sound and then wondered why I couldn't kill anything with shields, matching your weapon to the encounter is like half the difficulty of BL4 and once you figure that out the game gets way easier, I mean pretty much everything becomes manageable. Also can we talk about how satisfying a good AR feels, the consistent fire rate, the decent mag size, the way you can just keep shooting while your teammates are reloading their shotguns for the 50th time, it's honestly one of the most underrated feelings in this game and I love it, it's like being the reliable one in the group who never runs out of ammo while everyone else is scrambling. You know what I mean, that feeling when you're the only one still firing during a boss DPS phase because your AR mag holds 60 rounds and everyone else ran dry 20 seconds ago, that's the AR life and it's glorious.

Top Picks

So the Monarch in bipod mode is the AR king for bossing and I've literally watched it out-damage some heavy weapons, you become an immobile turret but nothing survives the DPS output and it's honestly kind of disgusting how fast it kills, definately the first legendary AR you should farm if you're just getting into endgame content. And the Lucian's Call with FL4K is infinite ammo crit chains and it feels amazing to use, tbh it's probably my favorite gun in the entire game just for the satisfaction factor alone, the sound it makes when crits ricochet is just chef's kiss. But the Breath of the Dying is the mobbing AR of choice because the corrosion orbs chain kill entire groups and I've cleared whole rooms without even realizing what happened, it's one of those weapons that does its job so efficiently you forget you're even using it. Then for non-legendary options, Dahl ARs in burst mode with good anoints can compete with mid-tier legendaries and you'd be surprised how good some purples can be imo, I've had a purple Dahl AR with the right anoint that outperformed half the legendaries in my bank. Also I should mention the Damned which is kind of slept on ngl, the shield on it is niche but in the right build it basically makes you unkillable and stuff like that, pair it with a Deathless artifact on Moze and you've got a budget tank build that refuses to die.

Build Synergies

The right build makes Assault Rifles go from good to absolutely broken and I've tested this across all four Vault Hunters so here's what I've found after countless respecs and way too much time at the test dummy. For Moze, look for splash damage synergies and ammo regen because she can fire Assault Rifles forever without reloading if built right and honestly it's so satisfying to just hold the trigger and never stop, the Forge skill plus a good Blast Master class mod basically turns any Vladof AR into an infinite bullet hose and the damage keeps stacking higher and higher until everything in front of you is dead. FL4K wants crit damage and fire rate to maximize the DPS window during Fade Away and the numbers get kind of stupid when you stack everything correctly, a properly built FL4K with a Bekah during Fade Away can one-cycle most bosses on Mayhem 10 if your aim is on point. Zane benefits from fire rate and accuracy buffs that stack with kill skills and tbh his speed builds with an AR feel like playing a completely different game, you're zipping around at Mach 10 while your AR fires with perfect accuracy and your drone is deleting everything in sight. Amara's elemental infusion can add an extra damage layer to any Assault Rifle and I'm not 100% sure why more people don't run this but it's probably because the setup is a little finicky and people prefer simpler builds, but once you get the elemental rotation down it's kind of nasty how much damage you can output. The key is matching the AR's natural strengths with your Vault Hunter's skill tree rather than forcing a square peg into a round hole, you know what I mean, pick the gun that fits your playstyle and build around it instead of the other way around, and definately test everything on the Sanctuary dummy before committing to a respec because what looks good on paper doesn't always work in practice. Also one thing I forgot to mention, the anointments on your AR matter way more than the actual gun stats in some cases and I've had purple ARs with perfect anoints outperform legendaries with bad rolls, it's kind of wild how much an anoint can carry a mediocre gun.

Common Mistakes

The biggest mistake I see with Assault Rifles and tbh I made this mistake for like my first 50 hours is using the wrong element for the encounter, BL4's Mayhem mode punishes bad element matching way harder than the base game and you'll burn through all your ammo before killing a single badass if you're using fire against shields or whatever. Shock for shields, incendiary for flesh, corrosive for armor, it sounds basic but people still try to brute force with the wrong element and waste ammo, I've done it, you've probably done it, we've all done it, and the game does not forgive you on Mayhem 10 when enemies have triple health bars and you're doing half damage.

Second mistake is ignoring the manufacturer gimmick because a Vladof AR plays completely different from a Jakobs one and if you're not using the gimmick you're leaving damage on the table, like the Vladof underbarrel is literally a free second weapon and people just never touch it which drives me nuts, it's right there on your gun, use it or whatever. Third is bad positioning because ARs have optimal range windows and standing at the wrong distance cuts your effective DPS by more than any anoint can make up for. Also stop reloading after every kill when you still have half a mag left, I see this constantly and it gets people killed because they're stuck in the reload animation when the next wave spawns, you get the idea, just let the mag run and swap weapons if you need to. And please for the love of loot test your ARs on the Sanctuary dummy before taking it into real content because tooltip DPS lies all the time and actual performance on a stationary target doesn't, I've been burned by this so many times with guns that looked amazing on paper but hit like wet noodles in practice, it's like the game is gaslighting you with fake damage numbers and you won't know until you actually shoot something. And on higher Mayhem levels where enemies get crazy health scaling, stop using non-elemental ARs entirely, the lack of elemental bonus damage makes them basically useless and you're just making the game harder for yourself for no reason, just a friendly tip from someone who learned this the hard way after wondering why my physical Monarch wasn't killing anything on M10.

Advanced Tips

Learn the recoil pattern of your main AR and I mean really learn it because every legendary has a unique recoil signature and mastering it means the difference between 60% and 95% crit accuracy which is honestly a massive DPS swing, like the Monarch kicks up and to the left slightly so you need to pull down and right to keep it on target and once you get that muscle memory down your damage basically doubles. Pre-fire before peeking cover with fast-fire-rate ARs because the first few shots will be on target by the time you expose yourself and this alone has saved me from dying to bosses more times than I can count, it's one of those simple tricks that seperates good players from great ones and it applies to pretty much every FPS game, not just BL4. Keep a backup AR with a different element in your second or third weapon slot because swapping is faster than reloading in most cases and this is one of those things that sounds obvious but you'd be surprised how many people don't do it, I always keep a shock Monarch and a corrosive Monarch on my weapon wheel and swap between them based on what I'm fighting or whatever. And for the love of loot test your ARs on the Sanctuary dummy before taking it into real content because tooltip DPS lies all the time, actual performance on a stationary target doesn't, I've been burned by this so many times with guns that looked amazing on paper but hit like wet noodles in practice, it's definately worth the 30 seconds to test before you commit to a build. Also one more thing I picked up from way too many hours of farming, if you're going for a specific anoint on an AR don't bother farming the dedicated drop if the world drop rate is decent because you'll probably get it faster just playing the game normally, your mileage may vary but that's been my experience and I've wasted entire weekends farming dedicated sources when I should have just been running Slaughter Shaft. Another thing I discovered by accident, the Monarch in bipod mode has a hidden accuracy boost if you crouch while deployed, it's not documented anywhere but the spread tightens noticeably and at long range it makes a huge difference, crouch before you deploy the bipod and you'll hit way more shots. And if you're struggling with ammo on high fire rate ARs, the Cutpurse artifact with a Facepuncher shotgun is a free ammo refill on melee, it's a weird interaction but it works and it saves you from having to buy ammo every five minutes on Moze builds that burn through thousands of rounds.