The Gorilla Machining Battalion GM-15 300 Black Out AAC 16” Pistol upper is designed as a fully Mil-spec compliant pistol series upper for every level of shooter. This pistol upper has the same level of quality and performance that you have come to expect from all of Gorilla Machining products. It has been configured at a price range that is affordable to shooters of any budget without sacrificing features and quality.
Each component is manufactured to Mil-spec standards.
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.
- Gorilla Machining 16" BR 1:8 Twist Barrel
- Cerro Upper Receiver Fully MIL-STD M4A4
- Pistol Length Gas System
- GM Pistol Length Stainless Steel Gas Tube
- GM AR15 Forward Assist and Dust Cover
- .750" Diameter Gas Seat
- GM Low Profile QPQ Gas Block
- GM Gen 3 15” M-LOK Free Float Rail System
- GM A2 Flash Hider
- GM T6 6061 Aluminum Standard Charging Handle
- NO BCG
- ALL UPPER RECEIVERS ARE TESTED BEFORE SHIPMENT.