Excellent choice for building out standard hand guards - Yankee Hill Machine Standard Top Mounted Deployable Iron Sight

Picked this up to complete a project where I wanted standard-type hand guards, but not using a railed gas block or front post sight. Mounted without issue on a KAK 11" 7.62x39 barrel and ran just fine. The sight portion works well in both actuation and in use as a front sight. Very similar to the YHM BUIS set that I use on other uppers. I will definitely be using this block (or one of the several variants made by YHM) again in the future.

Note: You will need a long gas journal on your barrel to use this style of block. If you have a barrel with a short gas journal (1" or so) it will be too short.