I know, most people will stand by their Magpul mags, and rightly so. But, I bought 10 Troy mags (Battleready Series) on sale for 4.99 ea, about 3-4 months ago. Should have bought more. They are really great mags. I've ran over 100 each of brass and steel cased ammo shooting single shot x 100rds and fast shooting x 100rds. I used them in my gas and piston rifles and they've worked flawlessly. I have 2 mags fully loaded since I got them to test the reliability of their springs. If anyone is interested, and I remember, I'll post up here if they retained their spring tension as designed. I'll Probably test them in March.