ARCA Rail help

Chief_Rick

Sergeant of the Hide
Full Member
Minuteman
Aug 12, 2020
269
150
MS Gulf Coast/World Traveler
I am looking for an ARCA rail to put on an Armalite upper.

There are five screw holes on the bottom of the handguard, spaced at 1.5 inches.

Looks like an 8 inch Arca rail will extend slightly beyond the gas block. A 6 inch rail may be a better choice due to the step at the rear of the handguard.
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I’d go 8”. A little overhang hurts nothing and will allow longer footprint. I used some cheap Amazon mlok arca rails, two 9”, on my 6ARC. Works great. If replacing the forend is a possibility I’d do that but if not then get the rail and make it work with the screw holes.

View attachment 8675025
I'd prefer to not replace the hand guard, at least not yet. The holes on the bottom of the factory hand guard are spaced 1.5 inches apart and threaded 1/4-20.

I'd ideally like to find a piece of rail with holes spaced 1.5 inches apart instead of large open slots.

I've found several universal rails, but the ones with holes don't specify the spacing.