Seemed like a good idea but i had to modify it - Franklin Armory AR-15 10 Round DFM Rifle Magazine

Like i said, the idea works. The little fins that keep the mag from dropping are sufficient. I had to bend them out to 45° to avoid catching on my bolt catch. Not a big deal but still not the best... probably voilded any warranty. The mag release button lock in firmly and appropriately. Then 8 noticed huge scrape marks in my brass and one round would chamber. When i removed the round the bullet had a gouge as well-The front of the mag has a wall if sheet metal that isnt on other magizines that SCRAPES my ammo deap, my plan is to just cut the wall off and sanded it up too 2000 grit- i will not recommend this product