Re: Ti-rant 45 and Sig Tacops
The standard .578-28 piston is designed with extra length to provide recoil spring guide rod clearance on hosts with a full length guide rod like the Sig 220. If the Tac-Ops has a full length guide rod, order the .578-28 standard. If it has a GI style recoil system, you can opt for the .578-28 short piston.