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Magpul Industries ACS
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Magpul Industries

ACS

$94.95
$90.20
Sale Price
Low Stock (3 left) California compliant

Magpul Industries Adaptable Carbine/Storage Stock, Fits AR-15, Mil-Spec Dia, Gray MAG370-GRY

Key Details
Brand Magpul Industries
Manufacturer Part Number MAG370-GRY
UPC 873750008950
SKU MPIMAG370GRY
Current Stock 3 available
Quantity Updated Jun 21, 2026 4:32 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

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.

Features
  • AR stock with storage
  • Storage compartment in tail of stock with positive latching access door on right hand side
  • Water resistant storage
  • Sloping cheek weld provides a wide contact surface for user comfort
  • Shielded release latch
Specifications
UPC: 873750008950
Manufacturer: Magpul Industries
Manufacturer Part #: MAG370-GRY
Model: ACS
Type: Stock