First Strike 48/3000 HPA Nitrogen Tank Guerrilla Air Tank Cover Combo CO2 Pistols • Dramatically Improves Sight Pictures

First Strike 48 3000 HPA Nitrogen Tank Guerrilla Air Tank Cover Combo CO2 Pistols • Dramatically Improves Sight Pictures • Dramatically Improves Sight Pictures and Enhances Shooting Accuracy • Exact Precision Tolerances to Fit All Model 4 15 Variants • Rugged Aluminum Steel Construction with Matt Black Finish to Withstand the Harshest Environment and to Meet Most Demanding Requirements • Precise MOA Windage and Elevation Adjustment in Accordance with Current Military Requirements • Complete with Dual Aiming Apertures • Exact Height to Co witness with Standard Front Sight and Most Electronic Dot Sights • One Piece Integral Picatinny Mounting Deck Fits All Flat Tops • Equipped with Locking Retention Thumb Nut MilSpec buffer tube and stock