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HKGhost · February 8th, 2011, 21:19

with a good air seal and standard M4A1 barrel length, you should get 400 fps (-/+ 10 fps) with a M120 spring. CQB barrel length will get you 370 fps (-/+ 10 fps).

February 8th, 2011, 21:19	#7
HKGhost Trader rating Join Date: Nov 2009 Location: Mississauga, ON	with a good air seal and standard M4A1 barrel length, you should get 400 fps (-/+ 10 fps) with a M120 spring. CQB barrel length will get you 370 fps (-/+ 10 fps). __________________ Please email me as I'm not on ASC too often. Custom Build \| Upgrades \| Repairs \| Maintenance Contact: ghostgunwork@gmail.com / Private Message