I have a Bushmaster M4that my work provides. We have an armory full of them and never have any troubles out of them. We just got a nice shipment of 11.5" barrel entry carbines on Friday. I sure wish mine was one of those, but I still can't complain abouta free rifle, free Trijicon Reflex site, and ammo to burn.
Check out www.lwrifles.com, its a LWRC, AR with a gas piston. The gas piston operates the bolt instead of hot gas gumming up the receiver and bolt.
Cost more but worth it.
Bushmaster also makes a gas piston, however it has a switch for hot or mild loads.
LWRC can handle any type of ammo.
Bushmaster and Olympic Arms here, both are great weapons. BB
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I have built several Stags and think that they are fine weapons.I have hung on to one for my own use since the ejection port is on the Left side..The Lowers are high quality,so you can add just about anything that you like.That is why the AR platform is so nice..Load up on some Hi Cap Mag's and some Ammo and you should be all set..
Im in the same boat as you. Im going to get a Smith and Wesson M&P "black rifle" before she goes into office. Ive heard alot of good things about them.