Upper Parts

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...

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...

Rifle 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. Includes Carbine Length Gas Tube Features: Mil-Spec dimensions .750 diameter Hardened...

The ACME ambidextrous charging handle is truly revolutionary in design & function. From rapid palm “blading” or finger thumb charges of the weapon, the motion is fluid & fast from either strong or support side. Made from aircraft...

Lets You Tailor Extraction & Ejection To Individual Loads Lightweight, steel gas block features an adjustable gas port that lets you tune the amount of gas for reliable extraction and ejection to match your ammo. Adjustment screw closes or opens the...