10/30 MP5 AC-Unity 9mm Polymer Magazine. Comes without retail packaging. A magazine block has been installed, to only allow 10 rounds in the magazine. The floor plate will have a rivet installed as well.
This MP5 30rd mag fits all HK MP5/SP5/HK94/SP89/MP5K/SP5K, MKE, Zenith ZR5RS, POF MP5/MP5RS, BW5, SW5, CA94 and other HK 9mm clones.