Aug 28, 2018 #1 T Tancred Bearcat Joined Oct 17, 2016 Messages 23 I'm looking to add some spare parts for my AR556 MPR. I know that semi-auto BCGs used to have a different firing pin with a smaller collar. Is that true with the MPR? If so, where do you find the right spare firing pin? thanks, Tancred
I'm looking to add some spare parts for my AR556 MPR. I know that semi-auto BCGs used to have a different firing pin with a smaller collar. Is that true with the MPR? If so, where do you find the right spare firing pin? thanks, Tancred
