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Posted: 10/17/2012 2:59:25 PM EDT
Hi, i've a yhm 9493 gas block. I would change it with GG&G because i think that yhm 9493 gas block is not rock enough. It works with osprey 416 gas piston. What do you think about? Have I to change yhm 9493 gas block? Until today i haven't had problems with it. Did you have experiences with yhm 9493 gas block or GG&G? Thanks for your attention, hope to read many answers.
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Posted: 10/20/2012 6:41:17 PM EDT
[Last Edit: 10/20/2012 6:45:41 PM EDT by BillBond]
I have the GG&G pin on fold down front sight block and think it is great.

However I am suprised that they are not more popular.
Probably too expensive, but to me it is worth it since I would never use one that is held on with screws.