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Old February 26th, 2008, 01:41   #11
tedan628
 
Join Date: Feb 2008
i didnt use silent piston head as well as any other systemas or better parts, cos the shop didnt have them at that time. And i asked that actually it s unncessary to change into sytemas unless i m changing stronger spring.
I was also thinking to get double O- ring piston head for my HK416, but unfortunately the shop also didnt have it...Darn!..
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