How about that? Using rails for quick attach and detach rear stock base. Laylax just announced that they are now taking pre-orders for the First Factory MP5 Picatinny Rear Stock Base Set and Ryan explains more... "Hey again LayLax fans, Rai here with another news update on what’s cooking in the LayLax labs. Despite COVID-19 slowing down logistics and manufacturing networks worldwide, LayLax’s use of in house R&D and 3D printing technologies allow for exceptionally fast development.

One area that we are expanding into is the world of modern stocks and braces with the recent popularity of PCC and SBR type guns in the real steel firearms world. Our first of a line of many offerings is the MP5 Picatinny Stock Base and Buffer Tube adapter set.

This new item brings the versatile and battle proven 20mm picatinny system from the handguard and top rail of your favorite guns to the rear for even more stock options. This type of '1913, 20mm picatinny' system allows the user to attach a new range of brace and lightweight types of stock making for an even more compact and tactical pistol or SMG. Specifically designed for a tight fit on the wide range of Tokyo Marui MP5 AEGs to prevent any wobble. Adjust the height to your liking for the best sight lines when aiming.

Stay tuned for more in this line and much more."