I took 5 each of these excellently made and finished $12.99 OE brand straight 20rd mags for the Mini-14 to the range this morning and in a word, they were flawless. I fired 100rds through them, each mag filled and fired slow, 5rd fire, rapid, 3rd bursts, slow, 5rd rife, etc., etc. and all fiver mags performed 100%. In addition, they have a tab welded to the mag for lockup with Ruger mag catch, very much like the M14/M1A mags which provides more positive lockup and a solid grip vs Ruger's own mags that use a formed piece of the mag body to act as a tab for engagement. Manufacture and finish looks to be equal or better than Ruger's and with their superior lockup, I feel that my OE mags will replace my 5 Ruger brand 20rd curved mags as the basic mags I use with my Mini.
Great mags at 1/2 the price of Ruger's and, they really look the part.