Components

This 5.56 chambered 16" M4 Profile Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening...

Build your own AM-15 with proven and reliable ACME Machine products. These kits are available with and without lower receivers. Manufactured and assembled in the midwest including Indiana and Ohio. All of ACME Machine's production parts are manufactured...

Barrel:  BA 20" .350 Legend DMR Carbine Length Barrel, Performance SeriesCaliber: 350 Legend17" Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 SKU BABL350003FLength 20"Material 4150 Chrome Moly...

Barrel:  BA 18" .350 Legend SPR Carbine Length Barrel, Performance SeriesCaliber: 350 Legend17" Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 SKU BABL350002FLength 18"Material 4150 Chrome Moly...

Barrel:  BA 16" .350 Legend BA Hanson Carbine Length Performance SeriesCaliber: 350 Legend12" Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 SKU BABL350001FLength 16"Material 4150 Chrome Moly VanadiumProfile...

Barrel:  20" Stainless SteelCaliber: 350 Legend17" KeyMod Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel:  16" Stainless SteelCaliber: 350 Legend12" KeyMod Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel:  10.5" ParkerizedCaliber: 350 Legend7" KeyMod Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel:  18" NitrideCaliber: 350 Legend12" Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel:  18" Stainless SteelCaliber: 350 Legend17" Hive Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel:  16" ParkerizedCaliber: 350 Legend12" KeyMod Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

This 5.56 chambered 18 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. This barrel features a longer .750” profile dimension necessary for...

Our 5.56 chambered 16 inch M4 Profile Carbine Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. Additional Info ...

Barrel: 16" 416R Stainless Steel M4 ContourTwist: 1:7Caliber: 5.56 Chamber15" Free Float HandguardACME AR-15 Upper Receiver 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 10.5" 416R Stainless Steel M4 ContourTwist: 1:8Caliber: 5.56 Chamber10" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 10.5" 4150 Parkerized M4 ContourTwist: 1:7Caliber: 5.56 Chamber10" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 7.5" Black NitrideTwist: 1:7Caliber: 5.56 Chamber7" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 ACME Charging Handle     *Picture might show optional accessories

Barrel: 7.5" 416R Stainless Steel ContourTwist: 1:7Caliber: 5.56 Chamber7" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 ACME Charging Handle   *Picture might show optional accessories

Barrel: 16" 4150 Black Nitride M4 ContourTwist: 1:7Caliber: 5.56 Chamber15" Free Float HandguardACME AR-15 Upper Receiver *Picture might show optional accessories

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is case hardened 9310 steel, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt...