I have a Colt 6731 and love it. However, I think it holds no advantage to the BM except in brand name recognition. I have a friend who has one and I admit it is the equal of my Colt. I think his came with only one 10 rd mag and my Colt came with 2 mags. Mine also came with a factory cleaning kit. Both shoot exactly the same with factory 55 gr ammo and look like they are twins, except for my tac sling you cant tell them apart from 50 feet. The BM has a chrome lined barrel and the Colt does'nt. Advantage to buying a BM, $100 more for the Colt.