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Discussion Starter #1
Hey guys,

I received an email from Top Gun Supply saying that their MR 762A1s are for sale. I ordered one! $3900 + $25 shipping.... (no affliation with Top Gun).

I have an AAC SDN-6 can and an AAC 51T Blackout Muzzle Brake for my MR556A1...... now I need a 51T Blackout Muzzle Brake to mount the can on the bigger brother....

Anyone know the threading of the flash hider on the MR762A1? I search and can't find.

Thanks!
 

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H&K Certified Armorer
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15x1 RH same as all the roller-lock guns.
 

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Hey guys,

I received an email from Top Gun Supply saying that their MR 762A1s are for sale. I ordered one! $3900 + $25 shipping.... (no affliation with Top Gun).

I have an AAC SDN-6 can and an AAC 51T Blackout Muzzle Brake for my MR556A1...... now I need a 51T Blackout Muzzle Brake to mount the can on the bigger brother....

Anyone know the threading of the flash hider on the MR762A1? I search and can't find.

Thanks!
I heard Top Gun sold out hours after listing them.
 

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Discussion Starter #8
Thanks, I contacted Mike from AAC today and the part number is 101113. I haven't heard back from the company that he referred but I hope I don't need to use a thread adaptor.

BTW, I have the MR762 Manual and it does NOT confirm M15X1 RH threading......
 

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Wanting to change out flash hider on stock MR762A1

BANNAR Bravo 3, M15 x 1 - OSS Technology Corp

Bannar Bravo.jpg

I thought I would switch my stock flash hider to one of these. At first I just wasn't sure of what size/style my threads were but after reading about the Geissele reaction rod tool (that I don't own) that inserted into the bolt side of the barrel to keep the barrel from twisting, I wonder if I have any business doing this myself. I am NOT an HK certified armorer.

I am only somewhat sure after reading this thread about the thread size...

photo (9).jpg

Thanks!
Steve
 

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Hey guys,

I received an email from Top Gun Supply saying that their MR 762A1s are for sale. I ordered one! $3900 + $25 shipping.... (no affliation with Top Gun).

I have an AAC SDN-6 can and an AAC 51T Blackout Muzzle Brake for my MR556A1...... now I need a 51T Blackout Muzzle Brake to mount the can on the bigger brother....

Anyone know the threading of the flash hider on the MR762A1? I search and can't find.

Thanks!
I know where you can get one for way less, return yours, send me 3750 ,I will ship it to you, just kidding, my lgs has one for sale for 3600 bnib.
If I get a good bonus , its mine.
 

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Barrel Threading Common Questions.

What do the threading abbreviations mean?

These are more common for handguns, not rifles…
LH- Left Hand (as an example – M13.5×1 LH means the threads are backwards from what you typically expect. This thread pitch would require righty-loosey, lefty-tighty…)
RH- Right Hand (as an example – M16x1RH means the threads work how you typically expect (righty-tighty…). If there is no LH or RH designation – RH is the default.)
M- Metric (for example – M13.5×1 LH means that the numbers are metric instead of standard.)
TPI – Threads per inch

Common Calibers.22 LR, .22 MAG, .17 HMR
The standard thread for these calibers is 1/2×28.9mm
1/2×28 is the most common thread for 9mm weapons – both carbine and pistol.
H&K weapons use the M13.5×1 LH thread pitch
Sig Sauer weapons use the M13.5x1LH thread pitch.40 S&W
9/16×24 is the most common thread pitch for .40 cal weapons.
H&K weapons use the M14.5×1 LH thread pitch.45 ACP
.578×28 is the most common thread for .45 cal weapons.
H&K USP Tactical uses the M16x1 LH thread pitch
H&K Mark 23 (Socom) uses the M16x1 RH thread pitch

5.56mm (.223)
AR-15s use the 1/2×28 thread pitch
Steyr Aug uses the M13x1 LH thread pitch
H&K weapons use the M15x1 thread pitch
Ruger Mini uses 9/16×24 thread pitch7.62mm (.308)
5/8×24 is the most common thread for 7.62mm/.308 weapons
Sako TRG uses the M18x1 thread pitch
Accuracy International uses the M18x1.5 thread pitch
AK-47s use the M14x1LH thread pitch

.338LM
5/8×24 is the most common thread for .338LM weapons
Sako TRG uses the M18x1 thread pitch
Accuracy International uses the M18x1.5 thread pitch
Desert Tactical Arms uses the 3/4×24 thread pitch

.50 BMG
1” X 14 tpi – McMillian TAC-50, Armalite AR50
7/8″ x 14 tpi – All Barretts & EDM
 
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