by KY_Mike » Mon May 30, 2011 2:59 pm
O.D. for the barrel under the gas block on either barrel is .750 (thanks wildcatter.) I looked long and hard for a receiver height gas block to use a set of Troy Battlesights that I already had and came up short. I ended up milling off the top of a regular picatinny gas block and measuring, then milling a piece of extruded picatinny blank stock to size and using set screws/loctite to secure it. (This only worked for the fake gas block on my 20", since I cut into the gas tube area on the donor block.)
You may be better off to look into getting a quadrail to extend over a low profile gas block or just selling your receiver height Troy front sight and buying a gas block height sight to match your rear sight. I've considered both for my 16".
Last edited by
KY_Mike on Tue May 31, 2011 4:08 pm, edited 1 time in total.