Muzzle Device Shimming - How Much is Too Much

[Dutch110]

Doing a 13.7 build. I have a Wilson three prong I really like and want to use on this build. It is 1.99 inches. I would have to shim this thing .31 inches to make length. I've got about .62 worth of threads on the end of the barrel to play with. Advisable or no?

[jackblack73]

Your math isn’t working out. You’re looking to be about an inch short. You’re not taking into account the overlap.

[GH41]

Your math isn’t working out. You’re looking to be about an inch short. You’re not taking into account the overlap.

.93 less the crush washer to be exact.

[GH41]

Your math isn’t working out. You’re looking to be about an inch short. You’re not taking into account the overlap.

.93 less the crush washer to be exact.

[Dutch110]

I actually am. The overall length of the muzzle device is 2.4 ish. Taking into account the overlap reduces the effective added length to 1.99 which also aligns with Wilson's spec.

[Dutch110]

1.99 + 13.7 = 15.69 leaving me .31 to shim

[gaijin]

.31” is a lot of shim.
I’d consider a different MD that would require minimal shim.

[El Vaquero]

Too much for my preference. Look at the Surefire Closed Tine as an option or the Closed Tine Warcomp version. Might get you there.

I had a 14.5 barrel cut down and the closed time Warcomp pin and welded on. Can’t remember how much he cut off to make it 16” overall. I think it was at least a 1/2” that was cut off.

[Dutch110]

Thanks. You guys are confirming what I suspected to be the case. I do like the NOX but will also check out those suggested. Stupid NFA.....

[Stickman]

Get a shim piece that size and see how it looks and how the thread engagement feels. I’ve stacked three crush washers to get the look I needed for pics, and then fired it. No longer term info, but there really wasn’t a need in my case.