This new innovative gas block/flash hider will effectively add an extra inch of gas travel to your SBR, this cheats the gun into thinking it actually has a longer gas dwell time.
difference between the now well discussed Vltor A5 stock to the standard carbine length stock.
SIGArms at SHOT 2011
What's better than an AK47, it would have to be a SIG SG556/47
Crye Precision and OPS Core at SHOT 2011
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