- Mon Jan 24, 2011 6:46 pm
#13036
Just bought one of these from Hoffmans. Pretty good deal I think. Im not really new to shooting an AR or M4 type rifle but I am pretty new to actually understanding them. So I was looking at the manual and was wondering is this "gas piston operated?" It says that the AR with the "knurled selector knob," is the piston operated variation. So what does that make the ORC model? I was also wanting to put a quad rail on it, would the quad rail cover that "gas block" thats in front of the handguard, or do I have to take that off? If so, how do I cause it doesnt state in the manual, It only says for the piston operated version with that knurled selector knob. Thanks for all your help.