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Fat_P · April 11th, 2013, 04:21

Hello I have an ICS SIG 552 and I changed the inner barrel for a Madbull Black Python Vers.II 6.03mm to 247mm as the store told me that it was done for a SIG 552. But my original barrel is 260mm. A difference of 13mm. I do not know if his mind for my performance on the fps.

Because at the beginning with the barrel and the original spring I have 350fps. And with tighbore Madbull Madbull Red bucking a 60 ° and original nub I have 358fps. I think it is very little for the upgrade I've done. And especially its normally should give me 15-20 fps more. It you a possibility to get the fps I'm supposed to do with the upgrade I've done. Thank you

April 11th, 2013, 04:21	#1
Fat_P Trader rating Join Date: Jul 2009 Location: Saint Amable, Quebec	Ics sig 552 Hello I have an ICS SIG 552 and I changed the inner barrel for a Madbull Black Python Vers.II 6.03mm to 247mm as the store told me that it was done for a SIG 552. But my original barrel is 260mm. A difference of 13mm. I do not know if his mind for my performance on the fps. Because at the beginning with the barrel and the original spring I have 350fps. And with tighbore Madbull Madbull Red bucking a 60 ° and original nub I have 358fps. I think it is very little for the upgrade I've done. And especially its normally should give me 15-20 fps more. It you a possibility to get the fps I'm supposed to do with the upgrade I've done. Thank you