Re: Surgeon dbm questions????
The M5 has a tapered foot print, wide in the rear, narrower in the front. The M5 has a mag release that I dont care for and is tight fitting where magazines are concerned. The tightness makes mag changes slightly more difficult/slower than the Surgeon DBM.
The Surgeon DBM taper is more even front to rear but does has a very slight taper. IMHO, the mag release is far superior to any thing else on the market and works easily as an ambi release with just the tip of your trigger finger, L or R. It has an extended mag well that guides the magazines in during mag changes and the mags fit looser than they do in an M5 making the changes quicker and easier. The front mag well also works as a stop during barricade drills. The Surgeon DBM can be installed in an m5 inlet with minor mil work.
I use the Surgeon DBM exclusively in my builds unless a client dictates other wise. They're all I run on my personal rifles and all I recommend. AI & AW magazines work with either as long as the receiver has been cut for the AW.