Yankee Hill Machine makes some of the highest quality AR-15accessories you can find. These particular end caps are used to dress up and provide protection for the end of your Yankee Hill Machine forearm. These caps do not interfere with the free floating of your barrel and they assist in keeping out debris. They are drilled to allow for proper heat venting.

Features and Specifications:
Manufacturer Number: YHM-9484-B
Forearm End Caps
Fits Yankee Hill Machine Free Float Tubes that accept end caps
Model B has an inside diameter of 1.050"
This is for all Heavy Barrels