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Dynamo · May 11th, 2009, 22:38

was one of your upgrades a new cylinder?
i was having some FPS issues with my gun for a while.
i was using a new systema M120 and getting no more than 300fps.
turns out that i had a non-ported cylinder, so i was getting "suckback", as the piston was pulled back, it would cause a vacuum and suck the BB back slowing it down.
now that i replaced the cylinder with a ported one, im just under 400fps.

May 11th, 2009, 22:38	#22
Dynamo Harvester of Noobs' Sorrow Trader rating Join Date: Oct 2003 Location: T̆͒ͥ̓̿̅̈́̐͊̿͗̐̾̃͐ͧ&#8	was one of your upgrades a new cylinder? i was having some FPS issues with my gun for a while. i was using a new systema M120 and getting no more than 300fps. turns out that i had a non-ported cylinder, so i was getting "suckback", as the piston was pulled back, it would cause a vacuum and suck the BB back slowing it down. now that i replaced the cylinder with a ported one, im just under 400fps. __________________ Weapons Technician / Gunsmith Don't look at me, I don't know, lol ¯\(°_o)/¯.