Genuine Rock River Arms: One of the original AR15 manufacturers and a premier maker of AR15 parts for a number of brands. This is a factory new delta ring assembly kit. Includes the Delta Ring, spring and c-clip.
DOES NOT INCLUDE BARREL NUT. The barrel nut is installed on the barrel before the installation of any gas block. The three (3) piece delta ring assembly kit attaches to the back of a USGI barrel nut, when the barrel nut is installed on the barrel. If you are buying a barrel with a front sight post (FSB), a military grade barrel will include a barrel nut. If you are buying a stripped barrel, you will need to add a barrel nut. USGI barrel nuts with many teeth is what you need to pair with this three part delta ring assembly.
Manufacturer's Part Number AR0014K
