MAC-10 Stock Adapter

MAC-10 Stock Adapter

This United Defense adapter bolts to the rear of a MAC-10 pattern receiver and gives you a threaded collar for a buffer tube, the round tube that carries an adjustable or fixed stock. MAC owners use it to swap the original stock arrangement for a more familiar setup. As the installed photo shows, the tube sits directly behind the receiver, roughly level with its top edge.

Features

• Threaded Buffer Tube Collar — An internally threaded ring at the top of the adapter accepts a threaded receiver extension, the tube a stock slides onto.
• Rear Receiver Mount — The lower bracket seats against the back of a MAC-10 pattern receiver, with shoulders on each side to locate it.
• Screw Clamp Retention — A screw in the base draws the bracket tight against the receiver, so it fits without permanent modification.
• Inline Stock Position — Once installed, the tube runs straight back from the receiver and keeps the stock aligned with the gun.
• Compact One-Piece Body — The adapter adds very little length behind the receiver and has no extra brackets or spacers.
• Black Finish — A plain black finish matches the standard finish on most MAC-pattern receivers.
• United Defense Manufacture — This is a commercially made aftermarket part, not military surplus.

Fit and Installation

The adapter is designed for MAC-10 pattern receivers. Thread the buffer tube into the collar, set the bracket against the rear of the receiver, then tighten the base screw. A buffer tube and stock are not part of this listing. Putting a stock on a firearm registered as a pistol can change its legal classification, so check federal and local rules before you install it.