Worked great right out of the package. Fast shipping.

Great magazines. Bought for my Mp5-K clone. Was concerned as I have not had great experiences with KCI mags on other platforms. These mags run great tho. I wanted to get a good reliable 20rd to keep the size down when I backpack carry. I Already ran about 500 rounds thru them with no issues so I feel confident enough to use them for what I intended. I Would certainly recommend them.

Now, I'm not going to lie and say I have cycled authentic HK mags in my MKE, however...
The MKE mags I recieved with my AP5 se to be top quality, and these KCI mags are right there as far as build quality, feeding, feel, etc.
I pulled them out of the box, jammed 20rds into each of the 5 I purchased, went to the range and had ZERO issues. I have purchased the 30 rd mags from KCI and had zero issues as well. I would highly recommend these to anyone that owns an MP5, clone, or MP5 fed AR platform.

The product is excellent - perfect fit and finish and perfect fit in the gun. Also, the most competitive price in the market - for product and shipping. I was hesitant to order, originally, when some people said that it has a very tight fit (meaning possible scratches in the magazine and the gun's mag well after use) - not in my case! If this mag had an Hk logo on it I would believe it (just trying to make a point here).
More importantly, though, there was a small issue with the order - I understand that things can happen. I called (no emails with responses days later) and I spoke with a real customer service person, after only a couple of rings. I was shocked! He immediately and gladly took care of the problem. To me this is more important than the perfect product that I received. Sales are always easy; customer service is where good vendors rise above the rest. I will gladly do business with the company again and will recommend them to friends and family!