I have 3 followers that are used to replace the followers in your 10 round mags and make them into 13 round mags. 2 are still sealed, the 3rd I opened up to examine. They install very quickly and easily, less than 1/2 a minute.
I paid about $8 apiece plus shipping, I'll sell for
$6 each shipped All sold
payment by money order or paypal (add 50 cents per follower for paypal)
Please email me with any questions.