For eBay, this is not a "magazine extension and does not violate your policies"
FREE Thumbsaver!!
This is a very simple drop in replacement.
Replace your existing follower with this.
No permanent modifications are necessary.
Simply remove the magazine baseplate & the spring and the original follower. Then remove the follower button that holds the follower in the magazine. Replace with the new follower, re-insert follower button and reassemble the magazine. Similar to Tandemkross Maximus Plus1 but much cheaper.
New updated design as of 5/15
SALE IS FOR A PACK OF 6 and FREE Thumbsaver!