I just installed a samson evolution 12 inch hand guard and my norinco m4 and when I tighten the retaining bolts the front of the hand guard lifts causing poor alignment and a horrable sight pitcure, I have installed the thermal bushings both ways and tried tightening the bolts while applying pressure to the hand guard still with no luck and sent a question to there tech support and just waiting for a answer back has anybody else had a simular problem like this
thanks John
thanks John


















































