By stalljs On 04/04/2009

Filled it full first time. needed a loader to put past 13 rds. in. Inserted it in glock. glock wouldn''t accept first round. pulled it out cleared receiver. turned magazine upside down and had ten rounds pour out of it. inserted again. seemed to work fine. should be promoted as a very long 17 rd. magazine.

By DLL On 03/05/2009

Mine were impossible to load more than 10rds at first, However I took it apart and lubed my spring and now they both work perfect. Not one problem.

By NFG On 02/07/2009

I purchased these years ago when they first came out. I've had nothing but trouble out of them. The internal sleeve appears to be a weak grade of carbon steel unlike the original glocks. When you can find one that will fully load, after a few loads it would bulge. At the time, I was an industrial radiographer. (x ray tech). I took radiographs of a brand new one, and physical measurements of the spring strength, follower dimensions, and magazine body. loaded and shot until it started the inevitable jamming. (three loads in this case) The internal sleeve displayed signs of dis-bonding/bulging with the polymer. Further; the follower was found to be cockeyed depending on the number of rounds loaded, as well as mildly deformed when checked after 500 grueling jam and shoot rounds. The spring itself showed extensive signs of weakening as well. In the interest of fairness, This was one of the first run magazines, and there may have been some R&D improvements since. However; by no means do they, nor ever likely to, equal the original glock quality in my opinion. The one time in my life that I may need my magazine to function flawlessly is not the time I want to be doing some companies trial and error.