SBR LRBHO Issues
After a 50-week wait, I’m the proud and happy owner of a 12.5” SBR. It is a 12.5” BCM upper with Rainier Arms BCG on a Spikes lower with Spikes T2 buffet. I have not ran it with a suppressor and do not intend to. I’m having problems with the bolt locking back on the last round. I’ve been using Magpul magazines. So far, I’ve only had success with Magtech 62gr and my home load (75gr Hornady BTHP over 23.5gr H4895). M193, Privi Prartizan 62gr and Hornady Black 62gr 5.56 have not locked it back. I’m thinking it’s a buffer issue but I’m not sure. The Search button returned many results but nothing relevant.
Good equipment is no substitute for good training.
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