Hi all,
So for my latest build I am running a SS 223 wylde barrel, low pro gas block, nickel boron bcg M16 type. So I had been running a lighter buffer and spring and was getting a failure to eject every few rounds using 62gr. I replaced the buffer and spring with a milspec H marked buffer and milspec spring and now she runs 223 55gr and 556 62gr flawlessly. No problems no matter how fast I pull the trigger. Now the problem I am getting is that the bolt wont hold open after the last round fired about half the time. I dont know if maybe I need to just put a few more rounds thru her and the spring will lighten up, or maybe I should cut a coil off the spring. My thinking is that though it has enough gas to cycle new rounds, it may not have just that little bit more to lock it back after the last one. Has to be in the buffer and spring combo since I had tried 3 different BCGs when I had the failure to eject and the only thing that made it reliable was changing out the buffer and spring to milspec.
Any thoughts? I am thinking cutting 1 coil off the spring and seeing if that helps. It doesnt lock back about 50/50. I dont think a H2 buffer will help but could be mistaken. Not sure.
Thanks in advance.
So for my latest build I am running a SS 223 wylde barrel, low pro gas block, nickel boron bcg M16 type. So I had been running a lighter buffer and spring and was getting a failure to eject every few rounds using 62gr. I replaced the buffer and spring with a milspec H marked buffer and milspec spring and now she runs 223 55gr and 556 62gr flawlessly. No problems no matter how fast I pull the trigger. Now the problem I am getting is that the bolt wont hold open after the last round fired about half the time. I dont know if maybe I need to just put a few more rounds thru her and the spring will lighten up, or maybe I should cut a coil off the spring. My thinking is that though it has enough gas to cycle new rounds, it may not have just that little bit more to lock it back after the last one. Has to be in the buffer and spring combo since I had tried 3 different BCGs when I had the failure to eject and the only thing that made it reliable was changing out the buffer and spring to milspec.
Any thoughts? I am thinking cutting 1 coil off the spring and seeing if that helps. It doesnt lock back about 50/50. I dont think a H2 buffer will help but could be mistaken. Not sure.
Thanks in advance.