For those who want to mount their rail-equipped rifles on tripods for precision shooting or doing a zero-in, Strike Industries got the Strike Picatinny to ARCA, 1/4", 3/8", QD adaptor for you. The Strike Industries Picatinny to ARCA Rail Adapter allows you to mount your rifle with a Picatinny rail onto a standard tripod or other ARCA-Swiss compatible device using its lightweight aluminum body and secure steel latch.

Engineerable gives a quick view of a Cheap Quick Release for use on Picatinny rails for airsoft and gel blasters... "This is a quick release for picatinny tactical rail compatible accessories. Instead of using screws to tighten the accessories on the rail, this has a quick release lever."

This is an interesting video from Fire Mountain Outdoors that has been online since March 2015. Watch as they discuss the pros and cons of rail systems now in use these days, comparing the M-Lok and KeyMod Rail Systems against the Picatinny Mil-Std-1913. The TAVOR XL Keymod Handguard is from Midwest Industries whilst the AR-15 is the SSM M-LOK Series One Piece Free Float Handguard.

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.