Aim Sports Advanced Modular Stock for AR-Platform

Adjustable AR Buttstock

The AIM Sports Advanced Modular Stock is a collapsible buttstock for AR-platform rifles and carbines. It slides onto the rifle's buffer tube (the round receiver extension behind the lower receiver) and locks at different lengths, so you can set length of pull, the distance from trigger to shoulder, to suit your build, your body armor or a shared rifle. It has a squared-off, skeletonized profile and several sling options built into the body.

Features

• Collapsible Design — The stock slides along the buffer tube and locks at multiple positions to shorten or lengthen length of pull.
• Underside Adjustment Lever — A spring-loaded lever under the body releases the lock so you can move the stock, then lets it snap back into place.
• Skeletonized Lower Strut — The open frame below the cheek area cuts bulk while keeping the stock's shape.
• Integrated Sling Slots — Rectangular slots on each side of the body take a sling strap fed straight through.
• Side Attachment Holes — Round holes on the forward part of the strut give another place to mount sling hardware.
• Rear Sling Loop — An enclosed loop at the toe of the stock offers a rear sling point below the shoulder.
• Textured Edges — Serrations along the strut give your support hand a positive grip when you hold the stock.
• Separate Buttpad — A distinct buttpad forms the shoulder contact surface at the rear of the stock.
• Hex Screw Assembly — Two hex-head screws hold the lower section together and can be tightened with a standard Allen key.
• Black Finish — A matte black surface matches most AR receivers and furniture.

Fit and Installation

The stock is built for a carbine-style buffer tube on the AR platform, and AIM Sports shows it on both AR-15 pattern and larger-frame AR rifles. The inner channel follows the tube's profile, including the ridge on its underside that the adjustment lever locks against. Buffer tubes come in more than one outside diameter, so check which type your rifle uses before you order.