Originally Posted by
dragonguard
Yep boomer 10 it was ment for you .sorry I missread Cal.Of your upper not used to seeing the 5.7 around .
HERE is A test for your disconector to finally eliminate it as the problem.
with upper off the rifle Hammer forward...pull trigger,While continuing to hold trigger to the rear use offhand thumb to cock hammer all the way back,it SHOULD be retained by the disconector and that hook on the underside of the hammer.
Next, very very slowly take your finger off the trigger.
The hammer should attempt to go foreward but only jump a small amount and be stopped by the primary sear notch, continuing to release untill finger pressure is off should leave it in the ready to fire position if you pull back on trigger it will fall all the way foreward .
If you are doing a very very slow trigger release and the hammer flys foreward without stoping then it is not the upper .
I'll shutup now and go back to lurking.
Good luck.