Basic AR-15: DIY Low Profile Gas Block and BCM Rail Upgrade

Basic AR-15: DIY Low Pr...

Upgrading your AR-15 rifle is a given for most owners of these guns.  Custom DIY upgrades are possible. From Iraqveteran8888 In this video we continue our AR-15 Upgrade series with a DIY low profile gas block and the installation of a quality free float rail from BCM. Free floating the...