Does the SCAR use the same bolt lugs as the AR? If so, I think it would.
It won't work on the Knights proprietary bolt lug/barrel extension from what I've read here.
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The bolt lugs aren't the same.
We had the G.R.R. not fit in a no-name barrel during our armorers class with I.G. It happens every once in a while, but it fit all the Noveskes, Colts, DD's, ARP's and BCM's I've tried it one. The tolerances are purposely tight.
Received my GRR last night and began working on the gun. Took the old FH off and now I'm trying to find a wrench thin enough to fit the Surefire FH.
In the meantime, is there any risk of bending the barrel when torquing on the FH? It seems like there's an awful lot of leverage being applied to the barrel, and it scares my newb ass.
If you tighten it only enought that it's good and snug with a little rockset, then hell no there's no chance of tweaking the barrel.
Perfect. Didn't want to do something wrong and bend my barrel to the left.
Thanks for your guidance so far. :)