Our rear stock adapter paired up with our upgraded folding adapter. Easy to install on your M92/M85 using our adapter between the grip and the receiver, no drilling or welding. *Our new AR stock adapter makes it easy to add an AR stock to your M70/ M92/M85 using our adapter between the grip and the receiver. Any buffer tube type AR stock will thread into the adapter, both commercial and Mil spec can be used. We provide 2 longer bolts to use your OEM grip or most aftermarket grips. *New grip block on the underside of the adapter for added strength to secure the grip. *New grip block on the underside of the adapter for added strength to secure the grip. *This part number for the Adapter, and upgraded folding adapter only. Upgraded folding adapter offers upgraded machined parts, machined improved locking buffer tube slot to prevent turning, upgraded hinge spring, improved to lock open and closed, no wiggle mechanism.