Sorry, but have never used co2 and hope i never have to. i got a 4500 psi carbon wrap tank the day i got my a-5

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A-5 14" Lapco Big shot W.A.S E-Grip, Tapco M-4 Tac stock, Vortex,Lighting Rod, QEPH,1/8 inch banjo fittings, x7 valve ,PMI remote line, 4500 psi. 68c.i. HPA ,Tac-Cap, Stove Pipe, Madman spring kit