Dual-Magazine-Clamp-for-HK91-G3-PTR

This appears to be a magazine maintenance/holding jig used to secure a magazine body for disassembly, spring/baseplate work, or similar maintenance—confirm the exact purpose and compatibility with your magazine before using. Always follow the manufacturer’s instructions: don’t use the tool on a loaded mag, relieve spring tension carefully (wear eye protection), and avoid forcing or bending feed lips or the follower. After any maintenance or reassembly, function-test the magazine several times in a safe range environment to confirm reliable seating, feeding, and release.