Complete your custom build with this item!!

The Magpul ACS™ (Adaptive Carbine/Storage) is a drop-in replacement for the standard M4 stock body, offering a comfortable sloping cheek weld, integral storage compartment, anodized aluminum strike plate, battery storage tubes, a friction locking mechanism to eliminate excessive movement, and optional dual-side QD sling mount. This stock will only fit mil-spec receiver extensions (buffer tubes).

Complete kit includes:

• Magpul ACS Buttstock.
• Mil-spec 6 position receiver extension.
• Castle nut.
• End Plate.
• Carbine Buffer Spring.
• Carbine Buffer.
• 3 dummy rounds.