S+ Precision inner barrel - 129mm
T-N.T. STUDIO full rage of inner barrel series are common platform, the side of the inner barrel is designed with AEG, GBB and VSR cuts, compatible with main brands AEG, GBB and the most sniper rifle on the market.
(There may be a few brands of guns that have special specifications and need to be modified by the customer.)
※Length below 220mm without air-cushion groove design※