THE ULTIMATE GUIDE TO COLT LMG UPPER FOR SALE

  The magwell engraving has improved, and Colt has rebranded all their carbines as "Carbine" and not marked M4 Carbine.  Here is the only change for the item.Effectively, there's two variants of the 6940P, as well as the just one I'd, I'm %99 sure the rings to the piston were being just like the rings around the bolt. I mean I can be Improper, bu