MAC 1014 Magazine Extension, Black

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.

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

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.

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.

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.