02-19-2013, 05:36 AM
This is a barrel extension:
![[Image: barrel_extension_and_pin.jpg]](http://i150.photobucket.com/albums/s95/MMcfpd/barrel_extension_and_pin.jpg)
![[Image: p_080000574_1.jpg]](http://www.brownells.com/userdocs/products/p_080000574_1.jpg)
There is no way it is Aluminum, as it is one of the main critical stress parts that absorbs tens of thousands of pounds of pressure. An Aluminum extension would cause the rifle to turn into a grenade. Are you possibly talking about a muzzle device?
There is no way it is Aluminum, as it is one of the main critical stress parts that absorbs tens of thousands of pounds of pressure. An Aluminum extension would cause the rifle to turn into a grenade. Are you possibly talking about a muzzle device?