H&K Mk23 .45 Magblock   (10 Round Limiter for 12 Round Magazines)

This Magblock fits the H&K Mk23 .45 magazines and will limit them to 10 rounds.  Easily installed in seconds under the magazine follower. It is held in place with tension alone.

- Save time and money making 10/12 HK Mk23.45 magazines.
- Lightweight and will not interfere with magazine reliability.
- Made of heat resistant, reinforced polymer.