What's the mechanical difference between that and the AR BCG? I was looking at the LMT website and both have virtually identical product descriptions and prices. Is it stronger since it is designed for F/A fire?
+1 they are just a beefed up versionThere are three different designs of the BCG: M16 AR15 and some type of hybrid design.
The AR and hybrid version are machined more along the bottom than the M16 BC to assure that if an autosear were ever installed, it would never properly trip.
The only real advantage of having an M16 BC is if you happen to have a SBR, the heavier bolt will ever so slightly help keep things in time