Upper Parts

This bolt carrier is manufactured from case hardened 8620 steel with properly staked 4130 steel gas key. The accompanying bolt is Carpenter 158, shot peened, HPT and MPI tested, and finished in a self-lubricating polished black nitride. Bolt lugs are CNC...

Solid T6 Aluminum Body 49/64-20 Thread  Pushes Flash Forward 1.245" OD 3.25 OAL

Drop-In Accuracy Fix; Stops Unwanted Movement Between Receiver Halves One of the fastest, easiest, cheapest accuracy-improvements you’ll ever find for your AR! Tough, high-density synthetic rubber wedge drops into the space behind the takedown pin...

Solid T6 Aluminum Body 5/8x24 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.245" OD 3.25 OAL

Solid T6 Aluminum Body 1/2x36 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.245" OD 3.25 OAL

Solid T6 Aluminum Body 1/2x28 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.245" OD 3.25 OAL

Solid T6 Aluminum Body 1/2x36 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.35" OD 3.25 OAL

Solid T6 Aluminum Body 5/8x24 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.35" OD 3.25 OAL

Solid T6 Aluminum Body 1/2x28 Thread  Pushes Flash Forward Great For Use On AR15 Pistols 1.35" OD 3.25 OAL

This is our standard AR-15 Micro Gas Block. Designed with the minimum profile to fit under nearly any quad rail system, it snugly fits .875 diameter barrels. Features: Mil-Spec dimensions .875 diameter Hardened Steel construction Non-reflective, Matte...

This is our standard AR-15 Micro Gas Block. Designed with the minimum profile to fit under nearly any quad rail system, it snugly fits .936 diameter barrels. Features: Mil-Spec dimensions .936 diameter Hardened Steel construction Non-reflective, Matte...

Carbine Length Gas Tube is a high quality solution for your next AR build. This stainless steel gas tube provides clean reliable function in your modern sporting rifle. Next time the need arises choose ACME or your assembly parts.Specifications and...

Mid-Length Gas Tube is a high quality solution for your next AR build. This stainless steel gas tube provides clean reliable function in your modern sporting rifle. Next time the need arises choose ACME for your assembly parts.Specifications and...

Set of 10 KeyMod replacement screws & nuts. Wrench included

Replacement component for the AR-15 that are made to strict military specifications. These high quality components will provide excellent fit and reliable function in your AR series platforms. These parts are perfect for upgrading existing components or...

Set of 10 M-LOK replacement screws & nuts. Wrench included

Pistol Length Gas Tube is a high quality solution for your next AR build. This stainless steel gas tube provides clean reliable function in your modern sporting rifle. Next time the need arises choose ACME for your assembly parts.Specifications and...

This is our standard AR-15 Micro Gas Block. Designed with the minimum profile to fit under nearly any quad rail system, it snugly fits standard .750 diameter barrels. Features: Mil-Spec dimensions .750 diameter Hardened Steel construction...

Gas Block Spring Pin 5/64 X 5/16 For use with low profile gas blocks and A2 style Front Sight Base sight towers.

Replacement component for the AR-308 that are made to strict military specifications. These high quality components will provide excellent fit and reliable function in your AR series platforms. These parts are perfect for upgrading existing components or...