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Questions & Answers
Is this stock available for left handed shooters? Expert Answer

Other than the compartment door on the right side this stock is ambidextrous.

by Jonathan D., Gear Expert, May 17, 2018
will this fit a RIA vr80? Expert Answer

The Magpul Industries ACS Rifle Stock is not compatible with the VR80 without having to remove and replace your pistol grip as well as your buffer tube with a commercial spec tube.

by Ethan, Gear Expert, December 7, 2022
Customer Reviews
Helpful Positive Review
My Stag model 3 T M came with this when I bought it new. Is a little heavier but is distributed well. Excellent cheek weld and fully customizable to get the right length. Nice and wide. Recently bought a Molot Vepr in .308 and changed out the War...
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2/2 found this helpful
Helpful Positive Review
great product! by km44, Verified Owner, October 14, 2018
Everything I expected. Great storage and perfect cheek rest for sight picture! The locking feature is a big bonus, as I found the positions adjust more accurately than my original stock. It is very quiet compared to my previous stock and the watertig...
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3/3 found this helpful
Most Recent Reviews
A little bulky by JB, November 1, 2020
Good product and good quality as always with Magpul. The stock is definitely sized larger than I expected. Easy to install and “plastic install bullet” does help slightly with install. It is more of a novelty than anything. Functions great and is com...
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Most Recent Reviews
Magpul makes great products. by E M, Verified Owner, July 2, 2020
Most comfortable stock I’ve ever owned. Check weld is super comfortable hold your face at a perfect angle. Storage tubes are awesome for batteries and the secret compartment is good for... whatever you wanna hide in there lol. Adjusts easily and lock...
Read More...
Read All 4 Reviews
Color: OD Green Gun Model: AR-15 , M16 Gun Type: Carbine Condition: New Gun Make: AR Platform

Code: 55-BSC-MACSCS-MAG371OD

MPN: MAG371-OD

Product No Longer Available

Product Info for Magpul Industries ACS Rifle Stock, AR15/M4 Commercial-Spec

The patented Magpul ACS (Adaptable Carbine/Storage) - Commercial-Spec Model is a drop-in replacement buttstock for AR15/M4 carbines using commercial-spec sized receiver extension tubes. A streamlined, anti-snag profile shields the release latch to prevent accidental activation. Similar to the Magpul CTR, the ACS also features a supplemental friction lock system that minimizes excessive stock movement 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 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear. ACS, Commercial-Spec (stock configuration). Weight: 0.88 lb. Weight, w/ Rec. Extension: 1.22 lb. Length, Maximum: 7.95 in. Width, Maximum: 2.58 in. LOP Adjustment Range: 3.80 in. LOP, M4 Collapsed: 11.75 in. LOP, M4 Extended: 15.55 in.NOTE: There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. If you have a mil-spec extension on your rifle, make sure to order the Mil-Spec ACS.image

Features of Magpul Industries ACS Rifle Stock, AR15/M4 Commercial-Spec:

  • Mounts on commercial-spec sized carbine receiver extension tube (not included) from manufacturers such as Bushmaster, DPMS, Olympic, and others.
  • Sloping cheek weld provides a wide contact surface for user comfort.
  • Two water-resistant battery storage tubes located on the left and right sides of the stock. Each tube will store up to three CR123 lithium or two AA batteries. Tubes are accessible from the rear via a tethered, hand-removable rubber plug.
  • Storage compartment in tail of stock with positive latching access door on right hand side.
  • Supplemental friction lock minimizes accuracy robbing wobble.
  • Shielded release latch prevents snagging and accidental operation.
  • Premium chrome-silicon lock spring provides positive locking and long service life.
  • Replaceable 0.30" Rubber Butt-Pad offers an anti-slip surface and increases impact protection.
  • Compatible with Magpul ASAP and other receiver-mount sling attachments.
  • Sling Mounts. Mid - Now includes the QD Swivel Sling Mount that fits up to 1.5" push-button swivels. Rear/Bottom - 1.00" sling loop.

Package Contents:

  • Magpul Industries ACS Rifle Stock, AR15/M4 Commercial-Spec

Magpul Industries ACS Rifle Stock Accessories

111 / 11
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Gunsmithing Tools & Accessories

115 / 15
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Gun Triggers

113 / 13
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Magazine and Accessories

119 / 19
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Gun Parts and Accessories

146 / 46
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Gun Stocks

115 / 15
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Gun Sights

116 / 16
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Mounts, Rings and Accessories

116 / 16
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Related Products to Magpul Industries ACS Rifle Stock, AR15/M4 Commercial-Spec

Magpul Industries ACS Rifle Stock, AR15/M4 Commercial-Spec Unavailable & Discontinued Models

List of Unorderable Models

  • Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, OD Green MAG371OD , MPN: MAG371-OD , Code: 55-BSC-MACSCS-MAG371OD
  • USED Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Black MAG371BLK, EDEMO2, Used, Condition Fair , MPN: MAG371-BLK-EDEMO2 , Code: 55-BSC-MACSCS-MAG371BLK-EDEMO2
  • USED Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Black MAG371BLK, EDEMO1, Used, Condition Like New , MPN: MAG371-BLK-EDEMO1 , Code: 55-BSC-MACSCS-MAG371BLK-EDEMO1
  • Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Foliage Green MAG371FOL , MPN: MAG371-FOL , UPC: 873750001074 , Code: 55-BSC-MACSCS-MAG371FOL
  • Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Flat Dark Earth MAG371FDE , MPN: MAG371-FDE , Code: 55-BSC-MACSCS-MAG371FDE
  • Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Black MAG371BLK , MPN: MAG371-BLK , UPC: 873750001043 , Code: 55-BSC-MACSCS-MAG371BLK
  • Magpul Industries ACS Rifle Stock w/Storage, Fits AR-15/M-16, Commercial-Spec, Gray MAG371GRY , MPN: MAG371-GRY , UPC: 873750008967 , Code: 55-BSC-MACSCS-MAG371GRY
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