Components

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: 16" 416R Stainless Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride *Picture might show optional accessories

Barrel: 10.5" 416R Stainless Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster7" Free Float HandguardACME AR-15 Upper Receiver  Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride *Picture might show optional accessories

Barrel: 18" 416R Stainless Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster17" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride   *Picture might show optional accessories

Barrel: 18" 4150 Parkerized Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster17" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride     *Picture might show optional accessories

Barrel: 16" 4150 Parkerized Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride     *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...