Tactical Trijicon ACOG TA01 Style 4x32 Cross Sight Rifle Scope + Kill Flash
TROBB Solid Aluminium Dovetail Power Block with Gmac hollow probe and G-mac Bolt
Gmac Brass Power Adjuster Spring And Guide/Drilled Out Standard Valve For more air space
Hammer Mods//Gmac 30% Lighter valve Spring/Gmac Brass Safety Catch//Transfer port drilled out
Full Gmac Trigger kit/Gmac barrel cut to 9inch/Weihrauch Silencer/Custom Home Made Grips/
New TRACER LEDRAY GL2 LAMP 90m Range Beam//HI-Pac
(Login ifrit617) Crosman Forum Member from IP address 126.96.36.199
I was wondering if I installed a flat top setup and stronger hammer spring and guide into a crosman 1377, without changing anything else, how many pumps would it take to get 650- 700 fps? I want to use the pistol for more reliable pest control and want at least these velocities in .177 cal.