06-11-2019, 08:27 PM
Cottobe Wrote:My lower is a standard M and P 15 for a 16 inch 223/556. The bolt release is standard. My next step is to try it on a different lower and then try different mags if I dont get better results.
So standard buffer and spring.
I think Vascar2 might be correct. Your gas port might be too small.

