R1 and L1A1 flash hiders interchangeable?

[frenchkat]

Metric FALs are left hand threads, while Inch are right hand thread. Both 9/16ths X 24.

I put an Inch 5 slot on my Metric para. Required me to cut the old threads off, re-thread for right hand threads and cut the key way.

I've heard of guys just cutting the new threads right over the old ones.

Check with DSA, I think they carry look-a-like flash hiders with the opposite threads.

Information

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[DakTo]

You will find the metric BGS, T48 and commercial imported FAL all with the long T48 flash hiders are right hand threads.
Nothing to do with the R1.

[Ex Crab]

Just how easy is it to remove the flash hider from an L1A1? Mine has no key and pin, it is merely screwed on. Will I need to engage the services of King Kong to turn the flash hider?