the T-REX 9 is backwards compatible with all previous Classic Army Nemesis series AEG upper receivers

so it wont slow down the recoil action

Rugged nylon fabric construction

This sight utilizes three colors

SS Airsoft Custom Hi-Capa 5.1 - Dragon Tooth AEG Piston Head the T-REX 9 is backwardsAnother hand build custom 5. 1 Hi Capa build. A sweet addition to the family. Get your one of a kind build today!! DragonTooth Includes: Tokyo Marui Gold match Base Airsoft masterpiece limcat Speedcat slide Tornado 5. 1 outer barrel LA Capa Guide plug AIP 120% recoil spring AIP 120% nozzle spring LA Capa magwell Laylax scope mount CowCow charging handle