Sunday, March 29, 2015
I swapped out my Colt Sporter half-circle Bolt Carrier Group
Colt Sporter because of the auto-sear block that is welded in place. I have found only a few people, one with photos, who say it will work just fine and dandy. In any case, I've got the new carrier group oiled up and installed; as far as I can tell, it does work well; I'll be at the range on Tuesday to give it a trial by live-fire. The sear-block does keep the M-16 style bolt carrier from functioning in my Colt Sporter (I tried the one from my carbine) but this AR-15 carrier (so far) looks to be just right.
I'll be keeping the Sporter's original half-circle bolt carrier so that I have the option of returning the rifle back to its factory condition. The reason I yanked it is because, by design, the unshrouded firing pin does not wear well. Even though it is not illegal to do so, there is no reason for me to have the auto-sear block removed; it is part of the history of that rifle and a testament to the political climate of that era; every gun has a story to tell.
Having an M-16 style bolt carrier does not make your AR-15 a "machine gun."
CLICK HERE and see that all bolt carriers are not created equal.
CLICK HERE to see how an M-16 trigger works compared to the AR-15
CLICK HERE to see how everything in the M-16 / AR-15 rifle is designed to work.