DISQUS

Defense Review: M4/M4A1 Carbine Reliability Issues Part II: Diagnosing the root cause.

  • Dan · 2 months ago
    I am going to take exception to the extra power CS buffer spring as a reliability enhancer. It has been my experience that they will, more times than not, cause the BCG to short stroke and not lock open on the last round. They may also cause a bolt over base failure by preventing full stroke of the BCG. I say go with caution on the buffer spring. A better solution would be a heavier buffer... H2 or H3 in the carbine with a standard spring.