[congaman59]

I recently bought a Ken Arnold compact compensator for my SU16-C online. I was surprised that a few days later Arnold called me to tell me that the compensator should be canted 10° to the right. there is a column of holes across the bottom. I am not sure which way "right" is. I figured one of you guys would know which right is the right right, right?
Now my other question is how do I calculate the 10°? Is this going to require special tools? I'm using a hex jam nut.

 

[WPhilB47]

Canted to the right should be in relation to the shooter, so you will turn it clockwise from the shooters perspective. The 10 degrees is not written in stone. An approximation within 1 or 2 degrees should be okay if you don't have any way to accurately measure. To get the idea, look at your watch or an analog clock. There are 60 minute marks on a clock face which encompasses 360 degrees around the circumference. Each minute mark equals 6 degrees. Rotate the compensator to the right so that the bottom moves to the left from 30 minutes to just barely past 31.5 minutes (31.5 would be 9 degrees).

 

[congaman59]

So to the right means to the right looking at the front of the gun?

 

[lop]

Hey Phil, I'm fuzed. Do you have a 'goofy' watch? Seems to me that 'to the right' from the shooters perspective would be to move the holes to the right. Since they are on the bottom, that is counter clockwise for those using a mickey mouse watch.

Can you clarify that one please?

lop

 

[WPhilB47]

Hey Phil, I'm fuzed. Do you have a 'goofy' watch? Seems to me that 'to the right' from the shooters perspective would be to move the holes to the right. Since they are on the bottom, that is counter clockwise for those using a mickey mouse watch.

Can you clarify that one please?

lop

Nope, and I may be wrong about where he needs to be. I see now that Arnold may have said move the holes right, but the devil is in the details. The OP's statement was turn the compensator to the right, before holes were mentioned. When rotating an object right or left, the motion is relative to the 12 o'clock position. Right or left on a firearm is taken from the shooters perspective, just as right and left on a vehicle is relative to the driver's seat. I think he had better call Arnold back for clarification.

 

[WPhilB47]

So to the right means to the right looking at the front of the gun?

Only if that is where you shoot it from.

 

[Steve912]

Is it this one?

http://www.kenarnoldcsa.com/guntecusaar-15mircosteelcompensator.aspx

 

[congaman59]

Yes that is the one I have.

 

[congaman59]

Just to be clear

I recently bought a Ken Arnold compact compensator for my SU16-C online. I was surprised that a few days later Arnold called me to tell me that the compensator should be canted 10° to the right. there is a column of holes across the bottom. I am not sure which way "right" is. I figured one of you guys would know which right is the right right, right?
Now my other question is how do I calculate the 10°? Is this going to require special tools? I'm using a hex jam nut.

I did say something about the holes on the bottom.

 

[WPhilB47]

I did say something about the holes on the bottom.

You sure did. Do you want to move the holes left or right, and viewed from the front or rear? Clarify.

 

[Steve912]

Yes that is the one I have.

Ok!

You got three rows of small holes on top side of device.

Normally you'd align the middle row with your front sight post.

I think what the mfr is saying (and you can always contact him, hint-hint)
is give the device a slight cant to right, ala the old AK minimalist muzzle device. The idea is to give a slight increase in muzzle gas pressure, up & to the right from muzzle. Rifles tend to recoil up and to the right...channeling a bit more of the muzzle blast up + right (in theory) helps you stay on target better and recover from recoil effects, faster.

As you shoulder rifle, try putting two rows of top holes, on right side of front sight post...

Best thing would be blast a few mags fast, standing, with it centered on front sight and then change it right on the range, and re-fire it same way and see if you notice an improvement.

 

[CyberScoper]

The manufacturer is probably the best source for clarification as you indicated they are the source of the instructions.

My experience is most compensators or brakes are designed to counter recoil and/or muzzle rise. Vent holes on the bottom generally increase muzzle rise, and have the annoying habit of kicking up dust and debris when shooting prone.

Edit:
Looking at the product description, it does state "Side Porting And Top Porting Reduces Muzzle Climb And Recoil". Therefore the holes you reference most likely should be on top, and if necesary to cant them right -- to the right side of the gun as viewed from the shooter's perspective.

 

[congaman59]

Okay. I have talked to Arnold again and was more confused than before! So I can see the 9 holes on the top of the compensator. there are 2 sets of 3 holes equidistant from the 9. So if muzzle climb usually goes up and to the right I would just turn the cpmpensator 10° clockwise looking down the barrel. Does that seem correct?

 

[CyberScoper]

From that description, the 9 holes will be on top, and the two sets of 3 holes will be on either side. You will then want to slightly rotate the top of the compensator to the right, as viewed looking down the barrel from the chamber end of the barrel (or shooter's perspective).

 

[WPhilB47]

From that description, the 9 holes will be on top, and the two sets of 3 holes will be on either side. You will then want to slightly rotate the top of the compensator to the right, as viewed looking down the barrel from the chamber end of the barrel (or shooter's perspective).

Ditto. Using my previous analogy, move the top center of the comp to 1.5 minutes past 12 o'clock.