Rock river arms target ar15 problem

[c1979]

The bolt lock back after last round is not far enough to load new round after mag change unless you pull bolt back further by hand any reason why this was like this from factory or how to fix it. Thanks

 

[Shep546]

So it cycles normally just the last round the bolt isn't locking far enough to the rear?

What if you manually lock your bolt with your bolt catch does it stay far enough back to chamber a round?

 

[greentips]

The bolt catch is holding on to the edge of the Bolt Carrier, not the bolt itself.

Go down the list in the following decending order:

1) Weak Ammo/Temperature too low
2) Weak Magazine spring
3) Stiff mag catch spring
4) minor gas leak