OUR S-7x308 Compensators are designed for use on RIFLES that have been threaded and or will be threaded chambered in .308 WIN (7.62 NATO), .30-06, or 7.62 x 54mm.

We designed the S-7A version with 7/8" wrench flats for ease of installation.
They are an excellent addition to any AR / AK Platform rifle and are available in 5/8"-24TPI, M15-1 Thread and M14-1 Left Hand Thread
(Please note that the Metric thread versions are only available in Black Oxide.) 

The S7-V is designed to give a smooth look to any varmint contour Bolt Action rifle and is only available in 5/8"-24 TPI.

The S7-T was designed for use on Bolt Action Hunting/Sporting contour barrels with an Outside Diameter less than .620" and are Threaded in 9/16"-24TPI.
The S7-TR was designed for a barrel Outside Diameter Greater than .620" and are Threaded in 9/16"-18TPI.

Note:(Crush Washers are Not Included due to differing thread length, but are available on our For Gun Smiths section)