Diagnosing feeding issue on a E-friends AR.

[BPTactical]

So your shooting shit ammunition in your AR and your having cycling issues?

Found your problem.



Laquer or Poly makes no difference, straight walled chambers don't steel cased ammunition.
Steel is less elastic than brass. You fire a brass cased round, the case expands upon firing and then contracts which helps during extraction.
Fire a steel cased round, it expands but does not contract the way a brass case does.
Worst case scenario you have a stuck casing in the chamber with a head ripped off.
A tighter than normal chamber exasperates the issue.

You don't have a feeding issue, you have a cycling / timing issue.
The steel case being sticky in the chamber slows down the bolt carriers rearward travel. It slows it down to the point where although it ejects the fired casing and strips a new round from the magazine it lacks sufficient velocity to reliably feed / seat the new round.
The rifle is essentially short stroking.
Add the fact that:
A - CommBloc ammo is typically lower powered.
B- It is filthy, sooty crap.


Run shit ammo, get shit ammo problems and learn to deal with it.