This video features a product spotlight on the Midwest Industries Alpha M4 Beam Stock, presented by Brownells Gun Tech™ Caleb. The Alpha M4 is not a traditional stock but an adapter that clamps onto any rifle with an M1913 Picatinny stock attachment rail, allowing the installation of AR-15 carbine receiver extension (buffer tube) compatible stocks. Its primary design purpose is to facilitate mounting AR-15 carbine stocks onto AK-47/AK-74 pattern rifles. It is also compatible with firearms like the SIG Sauer Spear and Brownells BRN-180 with specific lower receivers. The Alpha M4 is available in fixed and folding configurations. The fixed model is an all-aluminum option for areas prohibiting folding stocks or for rifles with existing folding mechanisms. The folding model includes a steel folding mechanism and can be set up to fold left or right. The design mimics the contours of an AR-15 carbine buffer tube, including notches for length adjustment. The adapter also features integrated QD sling swivel sockets. Installation involves a simple hex screw clamp. The positioning of the Alpha M4 on the Picatinny rail can be adjusted to fine-tune cheek weld based on optic height.
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