The Magpul ACS-L (Adaptable Carbine Stock – Light) is a mil-spec drop-in replacement buttstock for AR-15/M4 carbines that fit receiver extensions with mil-spec diameter. Made in the USA, the ACS-L retains Magpul’s center storage compartment and cheek weld while removing the battery tubes for a slimmer, lighter profile. Designed as a streamlined alternative to the standard ACS, it provides practical adjustability without added bulk. The stock is intended for use on carbines and service-style builds where a low-profile, functional stock is preferred (receiver extension tube not included).
Key Specifications
- The stock offers 6 positions for length adjustment.
- The adjustment type is Collapsible.
- It includes an integral storage compartment in the center of the stock.
- The exterior finish is Black.
- Designed for the AR-15 platform.
- The length of pull ranges from 11.60″-14.90″.
- Construction material is Polymer.
- The mil-spec receiver extension is not included with the stock.
- The model designation is ACS-L.
- Fitment is specified as AR-15.
With a lean profile, built-in storage, and six-position adjustability, the ACS-L balances utility and simplicity for range use, training, and duty-style builds. Its polymer construction keeps weight down while providing a familiar cheek weld and solid mounting for mil-spec tubes, making it a pragmatic upgrade for shooters seeking streamlined ergonomics without unnecessary features.
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