The patent-pending Magpul® ACS™ (Adaptable Carbine/Storage – Commercial Model) is a drop-in replacement butt-stock for carbines using mil-spec receiver extension tubes. A streamlined, anti-snag profile shields the release latch to prevent accidental activation and the extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure by resisting spring relaxation. Similar to the CTR™, the ACS™ also features a supplemental friction lock system that eliminates wobble* for enhanced weapon stability and accuracy. Dual, rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock provides multiple storage options. The ACS™ comes standard with a rubber butt-pad which gives positive shoulder purchase to prevent slippage even with body armor or modular gear.

PTS Airsoft Version Adaptable Carbine/Storage Rifle Stock for M4/M16 Series Compatible Airsoft Rifle Gun (Short Type Receiver)

Features:
- Mounts on Commercial (Airsoft Type) Carbine Receiver Extension tube
- It fit short type AEG receiver only
- Shielded release latch prevents snagging and accidental operation
- Premium chrome-silicon lock spring provides positive locking and long service life
- Supplemental friction lock eliminates accuracy robbing wobble
- Sloping cheek weld provides a wide contact surface for user comfort
- Replaceable 0.30” Rubber Butt-Pad offers an anti-slip surface and increases impact protection
- Two water-resistant battery storage tubes located on the left and right sides of the stock (Each tube will store up to 3xCR123 lithium or 2xAA batteries)
- Tubes are accessible from the rear via a tethered, hand-removable rubber plug
- Sling Mounts
- Optional ambidextrous QD sling mounts up to 1.5” push-button swivel
- Bottom 1" Sling loop

Length: 205mm (Retracted)
Lop: 7.9" ~ 11.2"

(* Friction lock performance may vary depending on the receiver extension’s dimensional tolerances)

Material : Reinforced Polymer