The patented Magpul ACS (Adaptable Carbine/Storage) – Mil-Spec model is a drop-in replacement stock for AR15/M16 carbines that use mil-spec receiver extensions. The streamlined, non-stick profile protects the release latch to prevent accidental activation. Similar to the Magpul CTR®, the ACS also features an additional friction lock system that minimizes excess stock movement for improved weapon stability and accuracy.* Two rear-opening, waterproof battery storage tubes and an integrated storage compartment behind the stock provide multiple storage options. The ACS comes standard with a .30” thick rubber pad that provides firm shoulder support and prevents slippage even with a body armor plate or other modular accessories.
