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  1. HKPRO MEMBERS' GALLERY
    I finally got away from work and was able to test out my USC/UMP conversion with the SEF Tactical 9mm conversion parts. The kit functioned great. I tried multiple brands of ammo and multiple sizes/types. In the session, I fired about 300 rounds (100rds UMC 115gr, 50rds PMC 124gr, 50rds...
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