Troy M14 Muzzle Brake (medieval) and Barrel ?

[Coyotecalgary]

It is the same size as a USGI castle nut .It is a direct connect type break.
The other benefit, is the points on the end can be used to either break glass or tenderize meat !

haha you got er! Just picked the Muzzle brake up tonight and I must say it looks quite menacing in person...

Zombie brains don't stand a chance!