Magpul ACS Carbine StockÂ
The Magpul ACS Carbine Stock is built for shooters who want more than a basic collapsible stock. Designed to fit Mil-Spec carbine receiver extensions, it adds expanded onboard storage, a wide cheek weld, and a supplemental friction-lock system to reduce wobble during use. Its sloping profile improves comfort, while the shielded ambidextrous release latch allows quick adjustment without snagging or accidental activation. With water-resistant battery tubes, a rear storage compartment, and flexible sling-mounting options, the ACS is a strong fit for AR-15- and AR-10-style rifles that need added utility without sacrificing durability.
Features
- Fits Mil-Spec receiver extensions
- Expanded storage with dual water-resistant battery tubes
- Additional rear storage compartment with right-side latching door
- Lengthened, widened cheek weld for improved comfort
- Ambidextrous release latch for fast stock adjustments
- The supplemental friction lock system helps reduce wobble
- Anti-slip rubber butt-pad
- Includes reversible QD cup and rear footman’s loop
- Compatible with Magpul ASAP, ASAP QD, and other receiver-mount sling attachments
- Made and engineered in the USA
Specifications
- Model: MAG370
- Platform Compatibility: AR10 / M110, AR15 / M4
- Receiver Extension Compatibility: Mil-Spec-sized carbine receiver extension tube only
- Length of Pull, Collapsed: Approx. 11.3 in.
- Length of Pull, Extended: Approx. 14.6 in.
- Length of Pull Adjustment Range: 3.3 in.
- Max Length: 7.9 in.
- Max Height: 5.2 in.
- Max Width: 2.6 in.
- Max Butt Width: 1.7 in.
- Weight: 13.7 oz.
- Weight with Receiver Extension: Approx. 17.5 oz.
- Sling Mounts: Reversible QD cup and 1.00 in. sling loop












