Summary
Apart from looking stylish, the main reason for building the best ACs inArmored Core 6is to have a mech that candestroy any targetwith the armaments it’s equipped with. An AC’s Back Units provide the extra firepower players need to land the deciding blow on enemies.
Related:Armored Core 6: Best Weapons, Ranked
Given that players can equip their ACs with two Back Units for the left and right shoulders, there is room for mixing and matching. But withso many Unitsto choose from, which ones have the highest ATK Power? From cluster missiles, grenade launchers, laser cannons, and everything in between, here are the Back Units that deal the most damage against enemy targets.
The following Back Units mentioned are available during the first playthrough by progressing through the Missions, acquiring Battle Logs, and purchasing them on the Shop. Other Parts can only be unlocked after beating the NG+, and NG++ are not listed here to avoid spoilers.

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135
1425

1.5
2

80
6.0

400
3580

EN Load
325
The BML-G2/P19SPL-12 fires two rockets that split into smaller missiles that swarm around the player’s target before exploding. This design allows its users toattack opponents from different angleswhile the rockets pose threats with their mini-missiles.

Having 80 rounds also helps its user bombard their targets with multiple rockets while they maneuver into a more advantageous position to deal more direct hits. Adding to this, the BML-G2/P19SPL-12 is relatively light compared to other Back Units, allowing somelightweight buildsto arm this on their ACs.
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648
204

440
1782
980
439
45
1000
145
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252
0.6
902
2.0
3
28
232
650
7620
784
Laser weapons are notorious for precise and consistently high base damage. The VP-60LCD is a redesign of the game’s laser shotguns that can spread their energy blasts but at further ranges. At 1308 ATK Power, it can plow through enemies, especially if the player manages to hit its charged attack.
On the other hand, the VP-60LCD only has 28 rounds, weighs 7620, and takes abig EN Loadat 784. These numbers equate to more experienced players since the low ammo count demands players to know when to fire their normal attack or its charged attack.
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15
190
70
510
20
5.0
800
8480
465
Armored Core 6offers some bazookas for players who want to blow their targets away in a huge explosion. While there are Arm Unit bazookas in the game, one of the stronger options is the SB-033M Morley.
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Sporting a respectable 1360 ATK Power and 1450 Impact, this bazooka will deal massive damage on an AC’s AP and Impact Meter. That said, its downsides include having only 20 rounds and weighing a staggering 8480. These render it a weapon option for middle to heavyweight ACs.
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7.7
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5010
The BML-G2/P17SPL-16 opts for a design philosophy that employs fear and eventuality. This is done by having ACs fire two rockets that move slowly but release a number of homing missiles that track enemy targets.
Firing this Back Unit before engaging the opponent is a good strategy since it can pull away the enemy’s attention to the incoming AC while the mini-missiles inch their way to deal more damage. This weapon also has good ammunition, though in some cases, its slow launch can prove to be detrimental, especially against speedy ACs.
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1278
828
120
700
12
12.0
6370
150
The BML-G1/P29CNT is a unique missile launcher: it hurls a container at its target, and once it’s in proximity, it releases a number of micro-missiles that scatter and explode around the area. In practice, shooting this at enemies looks like hurling a bee’s nest into unwitting targets, only there are more explosions.
It deals good AP and impact damage, and getting hit with this will do a number on unfortunate ACs. But its downsides are it only has 12 rounds, and it is heavy for a Back Unit at 6370.
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Vertical missile launchers tend to make their targets wary since they need to quickly dodge once the missiles are right on top of them. The BML-G1/P07VTC-12 circumvents that problem by launching 12 missiles onto their target. During Missions with multiple enemies that need to be destroyed, equipping this before sortieing out is a good option.
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In most cases, ACs that wield this mammoth of a Back Unit tend to be on the heavier side: its 5010 weight will bog down the more agile ACs.
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42
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285
Considered by many players to be one of the best Grenade Cannons in the game, the Songbirds is a great Back Unit for players during their first playthrough in the Missions. As the name suggests, Songbirds fire two grenades at quick intervals to deal massive damage to their targets.
Cleanly hitting enemies with Songbirds sees theirImpact Meter go significantly up, leaving them open for direct fire. While it only has 21 rounds since it fires twice each shot, landing them will put a big dent on the unlucky opponent.
1560
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570
30
2412
1272
792
125
0.5
944
39
196
540
6270
882
Plasma weapons are great options to deal damage against opposing mechs. The FASAN/60E is one of the available plasma cannons that can deal massive damage to targets. It has two fire modes: the standard shot fires a plasma beam that’s a bit slower than lasers but deals considerable damage. Its charged shot expands the plasma beam, and once it lands, it deals an additional plasma explosion.
One downside of having such a powerful plasma cannon is that it doesn’t pack that much ammo. With only 39 rounds, as much as seeing the explosions is fun, it would be better if the shots landed on their target. But in the hands of a capable player, the FASAN/60E can do some work against enemy ACs.
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Drones become available during the latter stages ofArmored Core 6’s Missions. In terms of ATK Power, the Vvc-700LD packs a punch: each drone sent out deals 288 damage, and given that 6 drones are released to blitz towards a target, the damage ramps up.
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The Vvc-700LD fires lasers on their target, and its damage is consistent. The drones also swarm the target and pelt it from multiple angles, giving the advantage to the AC equipped with the drones since the AC can rush in to deal more damage or snipe at their target from afar.
2098
1455
1101
90
720
16
12.8
1600
7230
386
Earshot is the Grenade Cannon that boasts the highest ATK Power at a whopping 2098. Adding to this Back Unit’samazing offensive statsis its Impact numbers: 1455 means if a player manages to hit their target with Earshot, it will deal significant damage that will also fill up the target’s Impact Meter.
Balancing out this weapon’s effectiveness is its dismal number of ammunition rounds. Having only 16 times to land this attack on an enemy means players’ ACs need to have good Units that can keep their targets still for a clean hit with this weapon.
Armored Core 6: Fires of Rubiconis available now on PS5, PS4, Xbox Series X/S, Xbox One, and PC.