JDForBrkFst
CGN frequent flyer
- Location
- Roughly North Central AB
As I promised before here it is.
I tested the magazines on two CZ-858's, one bone stock, the other has a large number of aftermarket parts. I had a total of five KCI magazines to test. Thanks to my brother, mcbain4344 for supplying the second CZ and four of the magazines.

First off, the differences: The KCI magazines have a metallic grey finish, much like many USGI AR magazines in circulation. The method of pinning is a bent portion in the magazine, not the usual rivet. They are made of steel it seems as there is a notable weight difference. Standard magazine weight is: .44 pd, KCI: .64 pd. they are approx a 1/4 inch shorter than standard magazines too. The follower is made of some sort of plastic, normally this is a non issue with most magazines, I am some what concerned that the bolt hold open portion of the magazine may wear out faster due to the CZ magazine design, much more use will be required before this can be established or not.


Function: The only stoppage issue experienced in approx 200 rounds was a failure to feed when releasing the action on a fresh mag, the round hung up while feeding. The fifth round is a tight fit in most of the magazines, making stripper clip feeding impossible to five rounds, it is fine up to four. This was consistent across the board. The followers also seem to be very stiff when depressing on them. Just the initial push, once they begin moving its smooth. Unlike a standard CZ magazine which has a smooth depression throughout. This may be due to how new they are still.
I would like to have put 500 rounds through the magazines but budgetary concerns prevented this. I'll keep adding updates as I use them, anyone else who has these magazines please add your experience. So far there has been little said about them except apparently they suck in CSA's. I hope this review helps anyone who was wondering about them before.
I tested the magazines on two CZ-858's, one bone stock, the other has a large number of aftermarket parts. I had a total of five KCI magazines to test. Thanks to my brother, mcbain4344 for supplying the second CZ and four of the magazines.

First off, the differences: The KCI magazines have a metallic grey finish, much like many USGI AR magazines in circulation. The method of pinning is a bent portion in the magazine, not the usual rivet. They are made of steel it seems as there is a notable weight difference. Standard magazine weight is: .44 pd, KCI: .64 pd. they are approx a 1/4 inch shorter than standard magazines too. The follower is made of some sort of plastic, normally this is a non issue with most magazines, I am some what concerned that the bolt hold open portion of the magazine may wear out faster due to the CZ magazine design, much more use will be required before this can be established or not.


Function: The only stoppage issue experienced in approx 200 rounds was a failure to feed when releasing the action on a fresh mag, the round hung up while feeding. The fifth round is a tight fit in most of the magazines, making stripper clip feeding impossible to five rounds, it is fine up to four. This was consistent across the board. The followers also seem to be very stiff when depressing on them. Just the initial push, once they begin moving its smooth. Unlike a standard CZ magazine which has a smooth depression throughout. This may be due to how new they are still.
I would like to have put 500 rounds through the magazines but budgetary concerns prevented this. I'll keep adding updates as I use them, anyone else who has these magazines please add your experience. So far there has been little said about them except apparently they suck in CSA's. I hope this review helps anyone who was wondering about them before.
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