This was very helpful as I have been so confused on which A3 stock. Thanks
https://www.hkparts.net/shop/pc/MP5-...on-5p17614.htm1999 according to this article: http://www.smallarmsreview.com/displ...darticles=3114Originally Posted by RegularGuy461969
What I'd like to find out instead is when the 4 position stocks were first introduced if anybody knows?
Last edited by DDC-04; 02-10-2019 at 12:39 PM.
There have been a variety of changes to the MP5 A3 stocks over the years. To the best of my knowledge, none of them had a convex shape to the butt plate. Even the prototype MP 64 had a concave shape.
One of the earlier A3 stocks had an all metal receiver end cap. Then, HK switched to a metal end cap where the rear portion of the end cap was plastic. HK also came out with a "universal" buttstock that had slightly longer forks and the bolt hold open cutout. This was intended to be used on both the .223 guns as well as the MP5 series. On an MP5, the longer forks would not let the stock fully retract. HK produced both the earlier A3 and subsequent "F" stocks with, and without a bolt hold open cutout. Then there is the multi position F stocks. Actually never had one of those, I have too many A3s as it is. There may be more versions, but that's all that come to mind.
Last edited by SudS; 02-10-2019 at 03:03 PM.
-God created man, Sam Colt made them even, and then HK screwed up the odds-
On the universal stock, how would they work with the .223 if it has an H buffer? Buffered carrier or do you change out the H buffer?
Also, this seems like a good deal considering recent prices. Not mine and no affiliation. Description clarifies it is not air soft and seems to have purchased from HKParts.
The non-pistol caliber stock requires a different buffer. It is an internal spring with a button plunger. The H buffer is not sufficient enough and if the A3 stock does not have the fore mentioned, then the BCG needs to. If you fire your gun without one of these buffers, it may/will damage the receiver.
[HK 93A3] [SP5] [HK MP5-22LR] [SA SAR8] [PTR 9CT]
Ok. Thanks, is is possible to retrofit a universal stock with the correct stock buffer for the .223 or would you need to use the buffered carrier? I don’t think I have ever seen the buffer for the .223 for sale as a separate part, but maybe I have not searched correctly.