Extension wouldn't align and shells would bind...I discovered two solutions and settled on this one: with the barrel fully seated and the extension in place, back off the extension about 1/2 turn until the alignment is acceptable... Non-alignment at the 3 and 9 o'clock position will exacerbate the binding...I placed witness marks on the extension and coupler...I believe the compression from the magazine/barrel nut will keep the extension from rotating...If you put 6 shells into the tube and it binds, you'll need to further tweak the extension...I tried dummy, Federal, and Winchester shells with no stoppage...not ideal, but so far, it works.

This extended mag for my 1014 breacher looks awesome and works great . It was a very easy install around 2 minutes and done . I recommend this extension.

Works flawlessly with no issues. Good quality. I am very satisfied with this purchase.

It adds more rounds to the capacity

I put it on and the shells would get hung up. I took it back off and re did. seems to work better can only fit 6 rounds not 7?

No instructions. Youtube has several people doing the installation differently.

No matter what I did or how I threaded the extension on, I could not get more than 5 shells into the tube with the extension installed. Every time I would get to the 6th shell, I could not load it and the spring and follower would get stuck, requiring the tube to be taken apart again. Wasted 3 and a half hours trying to make it work. Save your money and buy a full length tube instead. Only reason I did not rate 1 star was because of the excellent customer service and the quick, simple return process.

I’m thoroughly disappointed and a little upset by this product. It went on and everything but as soon as it was tightened the way it needed to reassemble the gun the follower would hang up on the connection getting dislodged. No matter what timing and tightening I did to the tube it never worked.

Adding 2 more is great