I have a Z43p and love it. I recently purchased a few new HK steel 30 rounds mags for it as I am a bit skeptical of the entirely polymer MKE mags. The MKE mags lock into the gun nice and snug. The HK steel mags rattle like a soup can be I g dragged down a gravel road. I always read that the HK steel mags usually fit the "snuggest" of all the magazines, yet they are pretty loose in my Z43.
Is this cause for concern? Is there any way to fix it? I imagine that to get the steel mags snug would make the polymer mags no longer fit....Will the loose mags cause malfunctions?
I plan to go to the range this weekend but wanted to get some insight here first...
Thanks in advance
Last edited by MtnRider; 03-20-2018 at 10:37 PM.
First of all, HK Steel magazines were made to fit real HKs, where the dimensions of their guns are always within tight tolerances. Clones or licencee guns may have different or loser tolerances.
If the magazine is loose by rocking it forwards and backwards in the mag well, then it maybe the magazine catch, the part that locks into the magazine, is undersized or off cantered.
If the magazine is loose by rocking it left to right, then the mag well it too wide.
I have fixed 93/53 clone left / right loose mag wells in the past by reducing the size of the mag well's width. You can do this inserting a wood block that fits tightly into the mag well or a steel magazine if necessary, and then place the mag well in a padded vice and slowly reduce the mag well's width dimension until the magazines fit just right. Reduce the width in an incremental fashion, testing the fit with multiple magazines before reducing the width any further.
I suppose only being able to use HK steel mags isn't the worst thing in the world....
Yes, the the clamp method would limit you to just HK mags, which I would be OK with since I am not a fan of plastic mags.
You could either try wrapping the top section of the HK steel mags with some thick tape to increase the width of the mags or apply tiny tack spot welds to certain areas of the mags to prevent the movement.
This is an interesting situation. I understand that Century products in the HK style weapons have issues have issues because they have some real quality control voids. I suspect the Zenith guns were designed with a larger mag well because Zenith or MKE knew they wanted to make their own polymer mag and just opened up that mag well on all their 5.56 guns a tad to accommodate that fact. The polymers needed a certain wall thickness that the original dimensioned mag well may not have allowed for enough material.
A somewhat similar situation, but not really, is the fact that an L1A1 will accept Metric mags, but they can dangle and rattle like you described the HK mags doing. The larger front tab on the Inch pattern mags makes for a stronger interface, but it limits what mags you may like best in that rifle.
If MKE mags are still available, I would archive your HK steels for another day and get all MKE plastics. Run those until they give out for reasons unknown as of this date and if you can't get more, squeeze that mag well and run HK steel.
Well, I went to the range and used the MKE mags, HK steel, and HK aluminum. The steel and aluminum mags rattle like crazy, but I had zero malfunctions of any kind.
For now, I will primarily stock MKE mags I suppose and buy a few HK mags as deals pop up...