The Magpul ACS (Adaptable Carbine/Storage) - Mil-Spec model is a drop-in replacement buttstock for AR15/M4 carbines using Mil-Spec sized receiver extension tubes. Dual, rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock provides multiple storage options.
Similar to the Magpul CTR®, the ACS also features an anti-snag release latch to prevent accidental activation along with a supplemental friction lock system that minimizes excessive stock movement for enhanced weapon stability and accuracy*. The ACS comes standard with a 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.
Collection - Collapsible Storage AR Stocks
Platform - AR10, AR15, M4, M16, M110, SR25
Compatibility - Mil-Spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, LMT, S&W, and others
LOP, M4 Collapsed~11.6 in.
LOP, M4 Extended~14.9 in.
LOP Adjustment Range - 3.3 in. Length, max8.0 in.
Weight - 14.1 oz.
Weight, w/ receiver extension - 18.1 oz.
Width, max - 2.5 in.
Other Specs
* Friction lock performance may vary depending on the host receiver extension's dimensional tolerances.
** Specifications based on standard-length (flat-back) M4 Carbine receiver extension and may vary depending on tube manufacturer.NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): Mil-Spec and Commercial-Spec. If you have a Commercial-Spec extension on your rifle you will need to swap it over to a Mil-Spec size tube to utilize this stock.
