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Magpul ACS Mil-Spec AR-15 Carbine Stock With Friction Lock And Rubber Buttpad Polymer Black MAG370-BLK

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Typically ships within 1 to 2 business days.
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Magpul products are made to last, and with plenty of forethought. The ACS stock is designed to provide the maximum possible storage space in the stock with the lowest possible weight. Storage compartments under the cheek rest are ideal for batteries, or cleaning supplies, while the storage compartment towards the rear is suited to small tools, earplugs, medication, etc. As with other Magpul stocks, the ACS also features the friction lock system that minimizes stock wobble, and improves accuracy.

The patented Magpul ACS is a drop-in replacement buttstock for AR15/M16 carbines. 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.

Specifications and Features:
Mil-Spec buffer tube design
Friction lock minimizes wobble
Battery storage tubes on left and right side
Ambidextrous storage compartment, ideal for earplugs, tools, small parts, etc
Ambidextrous sling loop
Rubber buttpad for a secure shoulder purchase


Item#: 6-1028470,2-MPIMAG370BLK,3-1028470
Total number of Reviews: 11

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5.0 5
"This stock is Awesome!! Fits snug and looks great!!!"
– Zombie Slayer
5.0 5
"This is an awesome stock. Absolutely no wobble fits snug as a bug. Magpul really knows what they are doing"
– payton83
5.0 5
"Be cautious when buying this stock! Make sure you know which buffer tube you have (Commercial or Mil. Spec.), or you'll find out the hard way, like I did. From the looks of it though, it's a great stock."
– RHurley
5.0 5
"I like the design and shape, and the extra width lends well to sight acquisition. It makes for comfortable shooting. The extra storage is a plus!"
– Jim
5.0 5
"I bought this stock to replace the one that came with my ArmaLite M-15. This stock has held up to all my expectations and it looks great! It was super easy to install and fits perfectly. Definitely would recommend this stock to anyone looking for a functional stock. Magpul is the way to go and CTD shipping is excellent!"
– Joseph
5.0 5
"For the few extra bucks, I found this stock to be well worth it. The fit is exceptionally good, very high quality, and I really like the way it looks on my rifle. Add a couple of steel rods into the battery compartments and the rifle becomes perfectly balanced. Good job, MAGPUL, again!"
– GeoTrapper
5.0 5
"Very nice fit better than expectedBest stock I ever used!!"
– N/A
5.0 5
"This stock is better than I expected. Fit and finish are excellent, and gone is the annoying wobble of the standard M4 style stock."
– William
5.0 5
"Great stock! Magpul never ceases to put out a great product. This stock is incredibly sturdy. No play in it at all because of the friction lock system. Very wide cheek well for enhanced sighting and ability to stay on target. The rubber butt pad allows you to keep it square and tight up against your shoulder and also keeps it from sliding around on your shoulder. I highly recommend this stock. In fact my buddy just ordered his after shooting with mine."
5.0 5
"All other AR Products Manufacturers are trying to catch up to MAGPUL, the quality, fit, and function is the best in the market. I only use MAGPUL stocks on my AR's and M4's: the ACS on my DDM4 lock down solid and the width of cheek weld is excellent for same sight picture redundancy. You get your money's worth and the best performance from your rifle. A good rifle gets better with good gear. Sight Picture Bang! Sight Picture Bang!U.S. ARMY (Ret.)"
– Marcel
5.0 5
"This ACS stock is outstanding. Fit and finish are what you've come to expect from Magpul. I put this on my Ruger SR-556 and it made an immediate impact - not just in looks, but fit, finish, and function are an amazing improvement. I'll be buying one of these for all my AR's.This is the Mil-spec size so be sure to check your rifle first. It snugs up very nicely and all of the covers function flawlessly. Cheek weld is confidence inspiring in any position."
– Jim B