11.5 Shortline Barrel
Barrel
Unlocked at Weapon Level 48.
Light barrel: faster aiming and movement, shorter range.
Weapons / Assault Rifle
Close range at LV 72: 5 of 5 final

Waiting for a verified source.
The official patch notes haven't changed this weapon yet.
We have ready builds for the M4: long range, close range. Pick a style and your weapon level in the lab above and we equip the right parts for that level, with stand-ins until the parts unlock.
We list 70 compatible attachments for the M4 across 10 slots, each with its unlock level and what it does.
In the same class: AK-27, AN-94, Axion. Each has its own page with level-by-level builds.
Barrel
Unlocked at Weapon Level 48.
Light barrel: faster aiming and movement, shorter range.
Barrel
Unlocked at Weapon Level 18.
Heavy barrel: more range and stability, slower handling.
Barrel
Unlocked at Weapon Level 32.
Long barrel: longer range and faster bullets, slower handling.
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
Magazine
Unlocked at Weapon Level 9.
Extended mag: more ammo, slower handling.
Exact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Fire Mods
Unlocked at Weapon Level 27.
Armor-piercing rounds: better against armor and vehicles.
Exact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Fire Mods
Unlocked at Weapon Level 40.
Frangible rounds: slows enemies you hit.
Exact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Fire Mods
Unlocked at Weapon Level 57.
High-velocity ammo: faster bullets and more range.
Exact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Fire Mods
Unlocked at Weapon Level 20.
Hollow-point rounds: more damage to unarmored targets.
Exact image unavailable — Fire Mods
SPECIAL CODE category presentation — not the exact attachment geometry.
Fire Mods
Unlocked at Weapon Level 3.
High-velocity ammo: faster bullets and more range.
Exact image unavailable — Magazine
SPECIAL CODE category presentation — not the exact attachment geometry.
Magazine
Unlocked at Weapon Level 39.
Extended mag: more ammo, slower handling.
Underbarrel
Unlocked at Weapon Level 11.
Bipod: very steady when mounted.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 67.
Breacher muzzle: better hip-fire up close.
Exact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Rear Grip
Unlocked at Weapon Level 10.
Assault grip: better recoil control.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 49.
Hip laser: tighter hip-fire.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 37.
Optic: a sight for clearer aiming.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 12.
Flashlight: lights up targets in dark areas.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 8.
Optic: a sight for clearer aiming.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 60.
Canted laser: faster aiming and sprint-to-fire.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 53.
Horizontal comp: less horizontal recoil.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 70.
Optic: a sight for clearer aiming.
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 28.
Tactical stock: better hip-fire and mobility.
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 6.
Heavy stock: less recoil, slower handling.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 42.
Canted laser: faster aiming and sprint-to-fire.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 58.
Optic: a sight for clearer aiming.
Underbarrel
Unlocked at Weapon Level 36.
Bipod: very steady when mounted.
Underbarrel
Unlocked at Weapon Level 38.
Foregrip: better recoil control.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 4.
Heavy silencer: off the minimap with more range, slower handling.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 54.
Silencer: keeps you off the minimap.
Underbarrel
Unlocked at Weapon Level 17.
Short foregrip: faster handling with some recoil control.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 45.
Balanced comp: less recoil on both axes.
Barrel
Unlocked at Weapon Level 7.
Heavy barrel: more range and stability, slower handling.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 25.
Optic: a sight for clearer aiming.
Underbarrel
Unlocked at Weapon Level 47.
Short foregrip: faster handling with some recoil control.
Underbarrel
Unlocked at Weapon Level 72.
()
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 72.
()
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 66.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 69.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 46.
Optic: a sight for clearer aiming.
Underbarrel
Unlocked at Weapon Level 5.
Foregrip: better recoil control.
Underbarrel
Unlocked at Weapon Level 30.
Underbarrel weapon: a second shot option under the barrel.
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 64.
()
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 14.
Heavy stock: less recoil, slower handling.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 31.
Optic: a sight for clearer aiming.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 24.
ADS laser: steadier aim while aiming down sights.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 23.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 71.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 63.
Optic: a sight for clearer aiming.
Exact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Rear Grip
Unlocked at Weapon Level 22.
Steady grip: steadier aim.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 13.
Optic: a sight for clearer aiming.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 16.
Hip laser: tighter hip-fire.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 29.
Optic: a sight for clearer aiming.
Exact image unavailable — Laser
SPECIAL CODE category presentation — not the exact attachment geometry.
Laser
Unlocked at Weapon Level 2.
ADS laser: steadier aim while aiming down sights.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 19.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 50.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 56.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 43.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 33.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 15.
Optic: a sight for clearer aiming.
Underbarrel
Unlocked at Weapon Level 62.
Underbarrel weapon: a second shot option under the barrel.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 41.
Flash hider: hides your muzzle flash.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 61.
Optic: a sight for clearer aiming.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 21.
Optic: a sight for clearer aiming.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 65.
Silencer: keeps you off the minimap.
Exact image unavailable — Stock
SPECIAL CODE category presentation — not the exact attachment geometry.
Stock
Unlocked at Weapon Level 44.
Light stock: faster movement.
Barrel
Unlocked at Weapon Level 68.
Light barrel: faster aiming and movement, shorter range.
Exact image unavailable — Rear Grip
SPECIAL CODE category presentation — not the exact attachment geometry.
Rear Grip
Unlocked at Weapon Level 55.
Skeleton grip: lighter, faster handling.
Exact image unavailable — Muzzle
SPECIAL CODE category presentation — not the exact attachment geometry.
Muzzle
Unlocked at Weapon Level 34.
Vertical comp: less vertical recoil.
Exact image unavailable — Optic
SPECIAL CODE category presentation — not the exact attachment geometry.
Optic
Unlocked at Weapon Level 52.
Optic: a sight for clearer aiming.
Exact image unavailable — Conversion
SPECIAL CODE category presentation — not the exact attachment geometry.
Conversion
Unlocked at Weapon Level 72.
Apex conversion: changes how the weapon fires and handles.
Exact image unavailable — Conversion
SPECIAL CODE category presentation — not the exact attachment geometry.
Conversion
Event Reward
Apex conversion: changes how the weapon fires and handles.