Midwest Industries Alpha M4 Beam Side Folder Stock Features The Midwest Industries Alpha M4 Beam Side Folder uses a heavy-duty side-folding mechanism machined from 4140 steel giving the hinge the strength to hold up to repeated folding and deployment. A full-length locking lug and a steel clamp with a large surface engagement area combine to deliver solid positive lockup whether the stock is folded or extended. The mechanism can be configured to fold to either the right or left side letting the shooter set it up to match their own build and preferences. Two QD sling attachment points are built into the adapter adding mounting options for a sling without extra hardware. Its modular design is built around a 1913 Picatinny interface allowing it to accept a wide range of Mil-Spec diameter AR15 stocks rather than locking the shooter into one proprietary stock option. This makes the Alpha M4 Beam a natural fit for AK47 pattern rifles and other firearms that already include a 1913 stock adapter extending its use well beyond a standard AR15 build. A curved top surface on the beam helps mitigate wobble that can come from the skeletonized design keeping the stock steady when extended. Adding about 7 inches to the firearm s overall length when deployed and only 0.75 inches when folded the Midwest Industries Alpha M4 Beam Side Folder is a compact versatile folding stock platform for AR15 and AK47 builds. Midwest Industries Alpha M4 Beam Side Folder Stock Specifications Manufacturer: Midwest Industries Model: Alpha M4 Beam Side Folder Type: Folding Stock Adapter Material: Steel Finish: Anodized Color: Black Style: Folding Compatible Hosts: Picatinny Rail AK-47 Mil-Spec AR15 Stocks Overall Length Added: 7 Folded Length Added: 0.75 Weight: 11.6 oz Available At: GrabAGun