- Pistol Length – 6.6875″
- Carbine Length – 9.75″
- Mid-length Length – 11.75″
- Intermediate Length – 13.625″
- Rifle Length – 15.125″
The intermediate gas system length is specific to Noveske barrels and uppers, and will not work with mid-length gas systems. (Designed for Noveske 18″ barrels with a 1″ gas block.)