I swapped the barrel on my 20" Howa Mini

[m796rider]

I ordered 3 of the extenders to try myself. Did you trim up the follower like others or can I get a pic of your internals and what you trimmed on the extenders. Much appreciate it. Did you add the pins to lock it on?

I had not shaved the follower and baseplate down all the way earlier... Doing so now allows 9 rounds. That 10th round fits, but it is very tight and doesn't always feed reliably.

I did not use the pins, but I may if I plan to treat the mag roughly.

For mods, here is what I did to the extension:



I made a little relief cut at the back of the mag body's lower shelf, and I basically followed the flush-fit 4 round mag instructions for the follower and baseplate. I also stretched the spring a bit to alleviate the follower nose-diving.



And here is a short, shaky video showing 9 round cycling through the rifle with no problems:

https://youtu.be/n52sSeKJIFc