The Gorilla Machining ACE GM-15 20” Rifle upper is designed as a fully Mil-spec compliant rifle series upper for every level of shooter. This rifle upper has the same level of quality and performance that you have come to expect from all of Gorilla MFG products Made In USA. It has been configured at a price range that is affordable to shooters of any budget without sacrificing features and quality.
NOTE: Some states and areas, like California, New York, New Jersey, Connecticut, Massachusetts require certain options and modifications.Please email us [email protected] for modifications price varies on each modification. Please check with your local FFL if you have questions regarding legality as we cannot be responsible for laws in every state or county.
NOTE: This item is an NFA (less than 16" overall barrel length) upper when used on a rifle lower.
- GM 20" Stainless Steel BR 1:7 Twist Barrel .224 Valkyrie
- GM Upper Receiver Fully MIL-STD M4A4
- .750" Diameter Gas Seat
- GM 4140 Steel Low Profile Gas Block
- GM M-LOK 15" 6061 Aluminum Free Float Hand Gaurd
- GM 4140 Steel Muzzle Brake 1/2X28 TPI
- GM Standard Charging Handle
- GM Stainless Steel Rifle Length Gas Tube
- No BCG
Our products carry a lifetime, no questions asked, warranty. Simply put... Should any of our products fail, return it to us for a brand new replacement.