I have 2 BMAS equiped rifles and I really like them. Both have had the piss shot out of them and after some initial tweaking, No Probs.
Granted I think the SIRS looks cooler but functionally I cant complain.
A little advice:
There is a ring that locks the outer tube (handguard) in place against the handguard (kinda like a 'jam nut'). Use locktite to secure it when you doing your initial assembly. Once you are sure is straight and are happy with its position, I would recommend drilling and tapping a few screws thru the handguard tube into the barrel nut. Of course, locktite these in as well. I used 0.5 inch 8-32 set screws and have had no probs even doing barrel strikes and 3 gun stuff.
I realize this may sound a bit confusing, but once you get the BMAS in your hand I think you'll understand what I mean. If you dont, email me at
[email protected] and I'll try to help some more.
Good luck and if you need help email me.
Jim