Hate to be the bearer of bad news, BUT ! Mixing parts like that is asking for troubles and headaches ! Barrel and bolt must be the same. Please get it Headspaced. Borrow a set or take it to a gunsmith. Stick with all RRA parts or All DPMS parts. Someone will chime in and tell you to start selling the oddball parts. Upper and lower should be the same.
One of the terrorist came in with the refugees in October. Per the Prosecutor in Paris. They got the driver of the black car ,today. Also the Germans busted a man with a truck full of AK's on Thursday.
ISIS claiming responsibility of attacks. 128 to 159 dead , 200 wounded , 8 attackers killed seven by their own suicide belts the other shot. French government failed miserably ! Immigration policies must change !
The best analogies of the bolt catch would be to compare it the a golf driver; if a DPMS is a 300cc driver then the Armilite is an older Big Bertha Driver. Head size and contact area is the key until it touches the underside of the bolt carrier when it is in the down position.(bigger is better to that point).
Hey... Sometimes you just DONT see any animals during you week out. I'm zero for three. That's 3 weeks out hunting and spotting no deer ! Yet I have seen hundreds of deer when I am not hunting. Just no luck when I have a tag in hand ! One of my boys at work gets a deer every year with his dad. Although the last one was the size of a greyhound. Haha . Cous deer are not big any way.