I posted over in another section and they suggested that I re-post here. I have a build in progress and want to order a heavy barrel custom upper from DelTon but I have 2 questions about the hand guard length.
DTI sells a 16 inch mid length upper with a heavy barrel and offers the option of a "YHM 4 Rail Light Weight Free Float Tube" and "YHM ML Ext Diamond Free Float Tube" I'm assuming that the 4 Rail Light weight tube does not cover the gas block but the ML Ext tube does cover the gas block. Is that correct?
Similarly DTI offers 16 inch carbine length upper with a heavy barrel. DTI offers "YHM 2 piece 4 rail" and "YHM Ext. Diamond Free Float Tube". Again I'm assuming that the 2 piece 4 rail does not cover the gas block, but the Ext tube does cover the block. Is that correct?
Thanks in advance.