The Magpul ACS (Adaptable Carbine/Storage) Carbine Mil-Spec model stock is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec sized receiver extension tubes.

• ACS Mil-Spec Carbine Stock
• Streamlined, anti-snag profile shields the release hatch to prevent accidental activation
• Extra-power lock mechanism uses a premium chrome- silicon spring to avert auto-collapse failure
• Supplemental friction lock system minimizes wobble for enhanced weapon stability & accuracy
• Dual, rear accessible, water-resistant battery storage tubes
• Integral storage compartment in the butt of the stock
• Includes .30 in. thick rubber butt-pad
• Weight: Approximately 1.2 pounds
• Shipping Dimensions: Approximately 9 x 6 x 3 inches.