Airsoft3D sent in news about what they say is the First MP5 Claw Mount to Picatinny Adapter, via 3D Printing... "The MP5 is probably one of the most famous and desired SMG. Therefore its airsoft replica is also extremely popular. But one of the biggest incompatibilities between a MP5 and other guns is its infamous claw mount. Once you get a claw mount scope, you're pretty much stuck using it only on your MP5.