Our take: This Umarex factory original, high capacity H&K magazine works perfectly with the Heckler & Koch licensed, S&T manufactured, UMP 45 AEG submachine gun. Constructed out of high strength polymer, this magazine holds up to 400 rounds and feeds flawlessly, even under the most strenuous simulated combat conditions.
- Flawless feed and fitment
- Compatible with Umarex's H&K UMP 45 AEG
Construction: Polymer Shell and Internals
Capacity: 400 Rounds
Compatibility: This magazine is ONLY compatible with the S&T manufactured Umarex HK UMP 45 AEG
Package includes: 400rd high capacity magazine