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I have a USC/UMP conversion using an HDPS short barrel and I was wondering if anyone may have an idea about a problem I'm having. I've put about 300 rounds through the gun, and have already had about 7 failure to feeds.
The rounds are being stripped from the mag, but then they get pinched "nose up" between the bolt group, and the barrel's feed ramp...and never make it into the chamber.
I didn't know if anyone else has had this problem with a non-factory Hk UMP barrel and I am just looking for any advice anyone could possibly give.
Thanks for any input!
-Mike
The rounds are being stripped from the mag, but then they get pinched "nose up" between the bolt group, and the barrel's feed ramp...and never make it into the chamber.
I didn't know if anyone else has had this problem with a non-factory Hk UMP barrel and I am just looking for any advice anyone could possibly give.
Thanks for any input!
-Mike