Compmag works well, I am using mine with 6.5 creedmoor , I used a Cross Armory mag lock to lock mine in lower. I needed to sand and file the front and back of the mag to get it to fit my PA-10 lower. It is a little bit hard to lock the knob down at times because of the heavier spring tension needed. The knob maybe could be a little bit larger on the AR-10 compmag. I have the compmag for my AK-47 and that one is just right. Last the AR-10 mag is long, would of liked it better if it only held 3 or 4 rounds and was a little shorter for the bench.
The AR-10 CompMag.
N.Y. Compliant with the simple addition of epoxy over the locking screw.
Installs and operates the same as our AR-15 CompMag.
Lifetime Warranty. If something ever breaks, we will replace it.
8 Round capacity.
Locks into your magazine well with an expandable insert built right into the side of the CompMag.
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.
Allows you to keep the AR-10 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.
Loads easier than a standard magazine. No heavy spring to push each round against.
Will fully load on a closed or open bolt.
One screw installation. No holes to drill. No need to modify your firearm.
Two minutes to install. Two minutes to remove, should you decide to shoot outside of California.
Ultra durable and heavy duty, built to last. 150% to 300% thicker side walls than most polymer magazines.
17-7 Stainless steel magazine spring.
CNC turned steel charging handle with glossy black oxide finish.
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.
Allows for easy clearing of type 3 malfunctions (such as double feeds).
Can be used in California and other restrictive firearm states. Check your local and state laws before ordering.
INCLUDES EVERYTHING YOU NEED FOR INSTALLATION.
Patent Pending Innovation. (CompMag has 6 patents pending at this time.)
Designed and Made In the U.S.A. Right here in California.
NEW YORK COMPLIANCE:
It does not, by itself, make your firearm New York Compliant. For N.Y. compliance you must either epoxy over the screw once the CompMag is installed or use another N.Y. locking device. For information on New York Compliance please read "Is the CompMag N.Y. Safe act compliant" at AR-15 CompMag Information.
Compatible ammunition: 7.62X51 / .308 / 6.5 Creedmoor
Compatible with standard AR-10 type lowers.
NOT compatible with lowers that have a custom or extended magazine well.
NOT compatible with LMT MWS.
READ ALL INSTRUCTIONS:
When tightening your AR-15 CompMag into the magazine well, be careful not to over tighten it. If it is tightened too much this will cause the rounds to rub inside the magazine and can cause misfeeds. If this happens, simply loosen the screw a bit, relieving the pressure.
Before using, please read the instructions and watch the videos found in the recent posts section on our home page, entitled "Loading and Unloading your CompMag. Clearing Double Feeds.". This will help you better understand how the CompMag operates.
As we, and our Attorneys, understand it, this product falls within the laws as written. At this point it has not been endorsed or approved by any law enforcement agency or regulatory body within the United States, due to their reluctance to endorse any compliance products. Once contacted, the D.O.J. told us that they would not endorse any compliance products and that we should seek the advice of a qualified firearms attorney.
We then had our firearms attorneys research the topic of California compliance thoroughly and their professional opinion is that the CompMag would be deemed a fixed magazine in accordance with California Law. Letters from them can be found on our home page under "Recent Posts".
Even though we have had our Firearms Attorneys approve this product as a fixed magazine according to California law, your situation may be different. For example, putting a CompMag on a banned AR-15/AR-10 or a short barreled rifle (SBR) will not make it compliant. Know your local/state laws and regulations prior to purchasing this product. If you are unsure whether or not you have an assault weapon, please contact a firearms attorney.
CompMag LLC. is not held responsible for injury or damage from inaccurate assembly, misuse, illegal use or modification of this device, nor are we held responsible for your understanding or interpretation of the laws and regulations that may apply.
great customer support , the original mag didn't fit my lmt 308 ( i broke it ), but contacted support for mag exchange and new one fits really well would highly recommend
I have the ar 15 compmag and just got the ar10 compmag.,it was a little tight fit so I emailed Compmag friday night and Saturday morning the owner David responded back! This company is top notch! David stands behind his products and Knew what my issue was and asked if I wanted a modified one or refund or exchange. I stayed the course and he sent me another compmag that fits and functions flawlless. Folks truth is we should support companies like Davids because he and all the people at compmag make a difference here in california . David I commend you for superb customer service and products!
Magazine goes on my Springfield Saint Victor 308. Had one issue, great customer service to quickly resolve the issue. Fitment is great. Install or uninstall takes less than a minute. Great option to have a CA compliant fixed magazine rifle and quickly convert back to normal when out of state
Great product! Well built! Great addition for anyone running a pinned mag. Customer service is also spot on! You won't regret making the change if you're one of those that have a pinned mag.
Love Comp Mag. Can keep my AR’s they way they were intended with all features.
This AR10/SR25 CompMag finally allows me to have my large frame AR without being encumbered by fin-grips, fixed stock, or takedown pin gobbledygook.
Couldn't be happier with this product. Brilliant design. Thank you!