Low Pro Gas Block for Colt 6933

[Reddevil]

I'm thinking of trying out the 11" Troy Extreme rails on my 6933. I'd prefer not to shave down my gas block in case I don't care for the Extreme rail and want to go back to the factory FSB. What are my options for a low pro gas block for the skinnier Colt barrel?

[bigb4015]

LaRue makes a .650 low profile gas block.

[Robb Jensen]

LaRue and PRI both make nice steel .625" (5/8") low pro gas blocks. LaRues will cover both taper pin holes in the barrel for a cleaner look.