Seeing as these magazines are quite new to the Canadian market I thought I would let every know how they functioned for me today at the range. I bought these from Brent, as usual top notch customer service. These magazines work exactly like advertised, easy to load. I ran 300 rounds through them, many times rapid fired a magazine using blazer ammo. Not one FTE, only once a fail to load a round. I HIGHLY recommend people to try these magazines, you wont be disappointed.