MAC 1014 Magazine Extension

Military Armament Corporation
(9 reviews)
Current Stock:

MAC-1014 magazine extension tube. Increases capacity to 7rds. Fits MAC-1014 series shotguns and compatiable variants Includes tube and spring. Anodized black finish.

WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to :


  • 4
    1014 Mag extension

    Posted by Gary on 6th May 2024

    Well made and easy to install. Only giving 4*'s because the spring that comes with it is too long. It was trying to double feed rounds onto the ramp. Switched to the original spring and it shot fine.

  • 5
    You need this!

    Posted by JP on 13th Apr 2024

    Fit and finish was flawless, great investment to upgrade the performance of your scattergun. Don’t think about it, just do it. You’ll be glad you did.

  • 2

    Posted by James on 12th Apr 2024

    There are issues. Ideally this would screw down tight onto the magazine tube in the gun and be the perfect length with all the threads covered. It does not. The threaded joint connector is not long enough. When I screwed it tight to the main tube and left threads showing towards the muzzle end of the joint, the magazine would only hold 5 rounds. You have to leave threads showing on BOTH sides of the joint to get it to accept all 7 rounds. It should screw together tight on both sides of the joint with no threads showing and have the perfect amount left for the end cap. I don't understand why this wasn't engineered better at the factory. It's a military clone - it should be idiot-proof. Also kinda pricey considering the issues and the price of the shotgun.

  • 5
    Works flawlessly

    Posted by Russell on 29th Mar 2024

    Installed in about 5 minutes. No intructions but pretty self explanatory. You will have to remove extension tube to remove barrel for PMS. A little inconvenient but for 2 more rounds it's the best bang for your buck. Don't buy any non Mac 1014 extension tubes as they are prone to get hung up. I've put 250 rds through it zero issues.

  • 5
    Obvious Accessory For MAC 1014 Shotgun

    Posted by John Michael on 29th Mar 2024

    This magazine extension is the obvious accessory to your MAC 1014 shotgun or your Benelli M4 shotgun. Adding this item to your M4 equivalent shotgun will provide 2 additional rounds in the magazine tube.

  • 3
    Just tried to install

    Posted by James on 26th Mar 2024

    Nicely made, but doesn't work with the Panzer M4 clones.

  • 4
    Works well

    Posted by Darin Kelly on 27th Jan 2024

    Easy to install and seems to work well, however, 2 things to note: a. no instructions included, which isn’t a huge deal but for a novice it may present some problems, b. Once installed the barrel can not be removed without removing the extension as well. When I ordered this I didn’t know if there would be enough clearance for the barrel to slide off or not, so I took a chance. It’s a bit of a hassle this way, but still workable for the price point.

  • 4
    Not perfect

    Posted by Gary DeRoy on 16th Jan 2024

    I just installed this on my 1014 Breacher. I love this shotgun. When putting it all together again, I put the spring retainer in the extension tube first; then I slid the spring into the main tube and screwed the extension on top of it. It was easier that way. One thing could have been better. So, the extension tube is threaded on both ends and one end has 1 or 2 more threads. The barrel nut that hold the 2 tubes together should have been at least 1/8" (or 3mm) longer. It doesn't cover all the threads. If you play around with the adjustments you can get it so it's not very noticeable, but it's still not right. This is the kind of thing in manufacturing that'll never be fixed, but all they have to do is add a couple mm of unthreaded tube at each end. If I can't get used to it, I'll grind the end down a little and touch it up with some Rust-oleum high temp flat black which is the same color and produces a perfect finish.

  • 5
    First upgrade

    Posted by Charles on 15th Jan 2024

    This is my first upgrade for my new Military Arms m4 clone. I plan to deck it out and make sure it is 922R compliant.