Shop › SANTAN AR15 GAS TUBE NTRD PSTL LNGTH SANTAN AR15 GAS TUBE NTRD PSTL LNGTH $20.00 San Tan Tactical Gas Tube Pistol Length, Black Nitride Coated, Gas Tube Kit with Pin STT-GT-P Add To Cart Added! San Tan Tactical Gas Tube Pistol Length, Black Nitride Coated, Gas Tube Kit with Pin STT-GT-P