Airsoft Canada - View Single Post

Sniper_ctc · March 6th, 2011, 17:24

I just recently upgraded the internals of my G&G M4 pneumatic blowback. I put in new gears, new piston+head, new cylinder head and a new S100+ spring. My friend told me that it should bring my FPS from what it was before I put the spring in (364FPS with 6.03mm, 363mm tightbore) to in the ball park of about 380FPS. When I chrono'd it with .2g ammo, it was firing about 334-344FPS with the S100+ spring. Everything is running smooth, found no air leaks. Only thing we though of that would decrease the FPS was the blowback. Anyone know if the blowback could really drop my velocity that much?
Thanks!

March 6th, 2011, 17:24	#1
Sniper_ctc Trader rating Join Date: Feb 2010 Location: Montreal, QC	Spring Upgrade I just recently upgraded the internals of my G&G M4 pneumatic blowback. I put in new gears, new piston+head, new cylinder head and a new S100+ spring. My friend told me that it should bring my FPS from what it was before I put the spring in (364FPS with 6.03mm, 363mm tightbore) to in the ball park of about 380FPS. When I chrono'd it with .2g ammo, it was firing about 334-344FPS with the S100+ spring. Everything is running smooth, found no air leaks. Only thing we though of that would decrease the FPS was the blowback. Anyone know if the blowback could really drop my velocity that much? Thanks!