[Drago1303]

Hi.

I have an MR223A3 (or MR556 for our US friends) and I recently replaced the stock flash hider with HK's rotex flash hider (#234182).

My old flash hider had a nearly perfect slot orientation (one slot straight up, one straight down). The new FH is slightly offset, so the slots aren't oriented like the old one. I used HK's official toque specs (45Nm and no crush washer).

Is this normal? Or should I use a shim washer to correct the rotation offset?

I should mention:

• I have easy access to 0.1 to 0.5mm shim washers
• I use the rifle for 100m precision scoped shooting
• I have my reasons for wanting to change to the rotex FH, so no need to discuss using muzzle breaks, please.

Thank you very much.
D

 

[dms16]

Flash hiders with 360 degree symmetry and openings all the way around don't NEED to be indexed anywhere in particular. Some people get OCD about having the wrench flats oriented a specific way or having one opening directly at 12 o'clock or something. It's more important not over-torquing it to meet an aesthetic.

Compensators like the traditional A2 or a Surefire Warcomp can and should be timed to a specific spot. Unless the Rotex has to be indexed and timed for the suppressor, it's just aesthetic.

 

[mr223a1]

Is this normal? Or should I use a shim washer to correct the rotation offset?

There is nothing wrong with it. As they say, if it ain't broke, don't fix it.

 

[Drago1303]

Alright. Thank you very much!