AR-15 CompMag

(23 Reviews)
Current Stock:

The AR-15 CompMag. 10 Round Ca. Version. (price is for one unit)

Our unique fixed magazine design creates an ammunition feeding device designed to be contained in or permanently attached to a firearm in such a manner that it cannot be removed without disassembly of the firearm action.

Reversible installation methods are provided to let the end user determine how they wish to modify their magazine.

Allows you to keep the AR-15 features you love on your rifle. (pistol grip, forward grip, retractable stock, and flash hider).

No need to "break your action" or deviate from the normal operation of your firearm to reload.   

No pins to pull out. No fumbling with extra parts.

Eliminates the need to carry around a loader.

Loads easier than a standard magazine. No heavy spring to push each round against.

Will fully load on a closed or open bolt.

No holes to drill. No need to modify your firearm. One screw installation. The screw threads into a metal insert that is molded into the magazine.

Two minutes to install. Less than one minute to remove.

Constructed of impact and crush resistant, G.F. Nylon 6.

150% to 300% thicker side walls than most polymer magazines.

Ultra durable and heavy duty, built to last.

17-7 Stainless steel magazine spring.

CNC turned steel charging handle with glossy black oxide finish.

Compatible with standard AR-15 lowers. (M4, M16, AR15). NOT compatible with lowers that have a custom or extended magazine well. (such as Seekins SP225, Sharps Bros, and Spike's Jack.)

Round counter indicates exactly how many rounds are left in your firearm, including what's in your chamber.

Holds the bolt open after the last round is fired. (Bolt catches and their machined positions in the lower vary. This feature is compatible with most combinations.) Even if this feature is not compatible with your set up, the AR-15 CompMag is designed so that the bolt carrier group will not contact the follower when the magazine is empty.

Allows for easy clearing of type 3 malfunctions (such as double feeds), due to the fact that you can easily remove spring pressure from the magazine and simply slide the round back into the magazine.

Will accept both .223 and 5.56 ammunition.

Can be used in California and other restrictive firearm states. Check your local and state laws before ordering.

Patent Pending Innovation. (CompMag has 4 patents pending at this time.)

INCLUDES EVERYTHING YOU NEED:  One complete AR-15 CompMag, mounting screw (plus an extra one), stainless steel mounting plate, Bondhus allen wrench, and Vibra-tite thread locking compound.

Designed and Made In the U.S.A.   Right here in California.


Please read the recent posts section on our home page entitled "Loading and Unloading the AR-15 CompMag. Clearing Double Feeds." before use. This will help you better understand how the CompMag operates.    Thank you.




Reviews (23)

AR-15 CompMag reveiw

Written by Tim Gee on Apr 18th 2018

Excellent product to have when you want your AR-15 to look like a AR-15. Easy installation and loading / unloading. And yes, I have purchased the other type loaders, and feel this product is the best. Price of AR-15 CompMag is reasonable, being you have to buy a loaders and pin , which is hard to uninstall, if you wish to go shoot your AR-15 in another state. With other loading devices, you have you cycle the rifle to unload your gun or drop the bottom of the pinned clip. Very awkward. I have purchased several for friends and family and they all are pleased with the product too. Finally, it looks great in my AR-15 too.

Comp Mag review

Written by Russ Clifton on Apr 11th 2018

Trying to comply with California's gun laws can be a challenge so when a high quality innovative product comes out to help us keep in compliance it is something to have. The Compmag 10 round capacity magazine is very innovative in that you do not have to break the gun apart to reload it. The side door and magazine latch with a counter on the magazine is user friendly and safe. I am looking forward to seeing more great products from Compmag

Compmag/Customer service

Written by Tom C. on Apr 11th 2018

In CA, the CompMag is a great alternative for a fixed mag solution. The magazine is solid and should provide prolong use. Besides developing a great product, their customer support is top notch. I had some function issues with my first order of CompMags. Contacted David and he provided excellent support in resolving the issue. Once he understood the problem, he immediately took care of the situation. CompMag takes their products seriously and believes in providing positive customers service. I would definitely recommend the CompMag to anyone trying to avoid registration and/or not big on the idea of having to separate the upper from the lower to release their magazines.


Written by Fernando on Apr 10th 2018

Magazine is great, fits perfectly on my wife's Anderson Manufacturing Lower, but it will not fit in my Seekins Preceision SP223 Lower, so beware if you have a Seekins lower or a longer magazine well as this magazine will not fit.


Written by Steve Curry on Apr 9th 2018

Wonderful product works like a charm and can’t wait to see the ak model mag

AR-15 COMPmag review

Written by Jonathan H on Apr 7th 2018

Chose to go the Compmag route for a fixed-magazine, mainly because of the problems when clearing a jam with the other fixed-magazine solutions. With the Compmag you just lock down the follower, which takes pressure off the rounds, and you can clear the jam as you would on a "normal" rifle. Also have some concern over the wear around the pivot pin if I had to open the action every time I had to reload. Product appears to be very well made. The plastic magazine body is thicker than I expected, and very stiff, so I expect it will be very durable. The sliding cover, spring, follower, and handle to lock down the follower are all similarly well-built. It's hard to imagine you could improve much on this for a fixed-magazine conversion.

Ar-15 compmag

Written by Paul West on Apr 6th 2018

The quality of the mag is excellent easy installation. Easy to load and unload. I really like it. Messed up in California to know have to have a fixed mag,but honestly using this mag is way better than having to open your ar-15 every time to take the mag out using the mag button locks. This mag makes it easy to load from the side. Best way to go to be California compliant with your ar-15.


Written by David Luciano on Apr 6th 2018

Comp mag worked great in my WIndham Weaponary (Formerly Bushmaster) but for some reason would not work in my PSA kit. My brother and I came to the conclusion that it was my feed ramps on the PSA kit. Customer service (David Maga) was awesome, very helpful a great asset to your team.

Compmag review

Written by Daniel Degraffenreid on Apr 3rd 2018

I found it is easy to use and install, It Works for all .223 & 5.56 based Cases, it is a bit shorter than some magazines in respect to overall Cartridge length, but a person could open the face of the magazine with a simple dremel tool to gain more length for some wildcat cartridges based on the .223 case, I will not work with 7.62x39 or 6.8spc and a host or other cartridge wildcats based on the .shortened .308/7.62x51 cases or the .458 or .375 socom. If I could get the magazine open it could easily be modified for those wildcat ar15 cartridges. The compmag does what it says it will do and allows a person to have an attached 10 round magazine that can be locktighted into place with one siple allen head cap screw.


Written by Kyle on Apr 2nd 2018

PERFECTION... can’t explain how amazing this is and how easy it is to use install and ZERO malfunctions.

Compmag ar15 Review

Written by Jim Clark on Mar 31st 2018

CompMag is a nice piece of engineering, as well-conceived and well-implemented as your AR itself. Our CompMag installed quickly and well. Cycled through over 100 rounds without fail or need for adjustment (Stag Arms). The loading port and counter are handy. The installed look and feel are familiar and comfortable --- and provide a satisfying sense of putting a thumb in the eye of the pandering morons in our government.

Compmag Review

Written by Stephen Grubb on Mar 30th 2018

The mag functions perfectly. Easy to load and unload. Sure would like to see a five round mag that is shorter and more compact for those of us who use our AR's for hunting.


Written by Horacio on Mar 28th 2018

Easiest fix I found out there to make an AR CA compliant. I give it 5 stars overall.


Written by John Constantino on Mar 27th 2018

Great product! Easy to install. Great customer service and I had questions.

Updated Review

Written by Anthony Dichristopher on Mar 24th 2018

So I just did a review about this and gave it a 3 star because I was having trouble with my weapon jamming when my mag had 5 or less rounds left. Well comp mag has got back to me and I’d like to report that they are sending me out another one. The customer service is excellent and honestly that’s everything when it comes to sales. They helped me out without dealing with any B.S. I recommend this product to everyone here in Buffalo NY. Thank you again Comp Mag


Written by Glenn urquhart on Mar 22nd 2018

I am impressed with the magazine. Good design and construction, performs as expected of any quality magazine. Installs very easily and with no modification to the lower. Yes, it's pricey but as said about the design, quality and performance standards are there so for me it was/is a good purchase.

AR15 Mag

Written by Chris Patrick on Mar 19th 2018

I really like the idea of this product. I prefer to run all the features on my Ar and this appears to be the way to do so. It installs easily and actually looks better than the 10 round mag us unfortunate california residents have to use. I would and have recomended this mag.

CompMag AR-15

Written by Jeremy Davis on Mar 19th 2018

A very easy process to install. Great fit a a good spring to feed rounds. Loading the rounds was easier and not as clumsy as I thought it would be.


Written by Richard Adams on Mar 1st 2018

Hands down the best way to make your rifle CA legal, super easy to install and use.


Written by John Osborne on Feb 21st 2018

Worked as advertised, loads easy, no feeding problems, bolt stayed back after last shot. I would recommend to anyone who wants to keep their pistol grip, flash hider or adjustable stock. Big thumbs up on a fantastic product. . .

AR-15 CompMag

Written by F.B.M. on Feb 6th 2018

WOW do not have to remove my evil features!!!! Ordered one for each of my ARs. Works flawlessly!

Your mag kicks ass!

Written by Matt W. on Feb 6th 2018

Your mag kicks ass! I installed one on my dads ar15, it’s easy to install and worked very well. We ran 300 rounds through yesterday without any issues. You’ve made ar15’s great again for us folks in California. You’ve also made another several customers since there were a bunch of people checking it out at the range. We will be ordering more for our other rifles. I am very much looking forward to the AK version. I will want to get one as soon as they are released. Thanks for making such a great product!


Written by Johnny Robinson on Feb 6th 2018

Just put 500 rounds through your mag and it's the best CA compliant solution .. so far it's also the only compliant device that makes feeding issues a breeze to clear. I would like to carry a couple of your mags in stock in my shop for my customers. Again I appreciate a good product that actually functions .. thanks

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