KZ 2 Shot Magazine Extension Tube For Benelli M4 Shotguns

Exactly what you need if you have the m4 or 1014. Fits great

Was 1 inch to long for the Turkish M4 so I had to use a spacer to be able to tighten the nut at the end

This is the best price I've seen on any M4 extension out there. The finish is great and blends well with the rest of the mag tube and barrel. The first time I put it on, I thought the threads at the end were too long because the barrel nut wouldn't go on fully, but after a few tries everything went together correctly so it probably just wasn't tightened down completely. Works perfectly now.

Did not drop in SDS S4. With the extension installed, I couldn't screw the cap down enough to lock the barrel so I had to cut a spacer out of some aluminum tubing. Works great now just be aware because if you aren't handy with tools, you will not be able to make it work.

After making my M4 922(r) compliant, I installed a Carlson tube extension I got on sale. Unless the shells were on the short end of the tolerance for 2 2/3 shells, I could only load 6. Also, the Carlson needs to be removed to pull the barrel and gas system from the receiver. I purchased and installed the KZ extension and couldn't be happier. It has nice fit and finish. Best of all, I can get 7 in the tube with it. This is a great alternative to the extension Benelli sells.

Works well on the Benelli M4. Had some minor finish issues, but still looks great and works as intended.

I put it on a sds s4 clone. it had to be fit to the tube as I'm sure the QC in Turkey isn't great. but the tube is great.

This item is a direct fit for the SDS Imports TAC-12. Installation was simple, can continue to use the factory spring with no issues. The color of this extension does not match the color of the weapon…minor con to me. I recommend this to anyone not wanting to spend Benelli money.

This is a great addition to my Sulan TAC-12. I am still using the factory mag spring with no flaws or issues. The paint on this tube is a shade lighter than the weapon.

Excellent product, tested it yesterday and worked flawlessly with my Wolff spring. Botach 5 for 5! Quality product, fast shipping and excellent customer service. Thanks Again!