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11/26/2016 6:11:39 PM EDT
The top group is shooting without the suppressor.



The bottom group is shooting with the suppressor.




Why is it shooting low and right?






11/26/2016 6:22:33 PM EDT
[#1]
Barrel harmonics.



Anytime you add weight to the end of you barrel (like a suppressor) it
will change the barrels harmonics and can change the POI. Also
if your barrel isn't threaded just perfect the POI can change.
11/26/2016 7:41:31 PM EDT
[#2]
What he said. What distance
11/26/2016 7:43:08 PM EDT
[#3]
What suppressor and mount?
11/26/2016 7:52:24 PM EDT
[#4]
What was your POA?

ETA: And what was the range?

JPK
11/26/2016 9:11:45 PM EDT
[#5]
A lot of pistol suppressors will let you adjust for POI.
11/26/2016 11:15:37 PM EDT
[#6]
It's a Gemtech Tundra on a Lone Wolf G19 barrel.
11/26/2016 11:43:26 PM EDT
[#7]
Maybe this thread will help?

https://www.ar15.com/archive/topic.html?b=6&f=20&t=454005
11/28/2016 5:44:34 PM EDT
[#8]
The other thing with pistol suppressors is you can see them, and it does something to peoples brains and causes them to shoot differently.

I've seen guys that were shooting wildly off with a can, then without it perfectly on target.

I'll take the same gun, then put on the can and ring steel at 50+ yards without a problem, and keep an inch group at 15 yards.  Pistol suppressors can affect POI, but for some people seeing the can does some weird brain-magic and it is hard to adjust to.   Same with any pistol that doesn't shoot right, I would diagnose both the physical aspects, as well as let someone else shoot just in case it's a shooter issue.  (Not that you can't shoot--- just the extra little something you can see near the sights can do funny things until you really get used it it)

Not saying that is the case, but something to perhaps consider if the fix in the other thread doesn't work.
11/29/2016 9:11:02 AM EDT
[#9]
I'm curious about this comment.  How do pistol suppressors let you adjust for POI?  

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Quoted:
A lot of pistol suppressors will let you adjust for POI.
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11/29/2016 9:23:20 AM EDT
[#10]
Quote History
Quoted:
I'm curious about this comment.  How do pistol suppressors let you adjust for POI?  


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Quoted:
I'm curious about this comment.  How do pistol suppressors let you adjust for POI?  

Quoted:
A lot of pistol suppressors will let you adjust for POI.



It's done by rotating the piston within the piston housing. It also assumes that you maintain the same baffle orientation on disassemble-able suppressors when you take them down for cleaning.

11/29/2016 9:56:44 AM EDT
[#11]
Thanks for that.  I'll try rotating the piston within suppressor to see if that helps.

Quote History
Quoted:


It's done by rotating the piston within the piston housing. It also assumes that you maintain the same baffle orientation on disassemble-able suppressors when you take them down for cleaning.

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Quote History
Quoted:
Quoted:
I'm curious about this comment.  How do pistol suppressors let you adjust for POI?  

Quoted:
A lot of pistol suppressors will let you adjust for POI.



It's done by rotating the piston within the piston housing. It also assumes that you maintain the same baffle orientation on disassemble-able suppressors when you take them down for cleaning.


11/29/2016 10:44:37 AM EDT
[#12]
Quote History
Quoted:
Thanks for that.  I'll try rotating the piston within suppressor to see if that helps.
View Quote

This is often done by mounting the suppressor on the host. Then, (following all safe firearm handling procedures) pull the can away from the host to compress the spring. At that point, you can rotate the suppressor so that the teeth on the piston engage a different slot in the piston housing. It'll be a trial an error process to find the setup with the least amount of POI shift.

For the OP, starting with a 180-degree twist would be my first step.
11/30/2016 1:51:09 PM EDT
[#13]
timing the can to the host will help and it could just be the baffle stack design. i was told it all depends on how they design their baffles and how they are aligned inside. some of the baffles in my AAC cans have a "scoop" for lack of a better term, on the exit hole edge. most of them are staged, not aligned.

i have a new model AAC M4-2000 51 tooth mount and it has all these little scoops aligned and the can has a metric shit-ton of POI shift. almost so much that it makes the can worthless. AAC guy here claims is a "better" design...whatever. i won't buy another AAC product.

my older AAC cans are way better but that was before Reamington bought them.

here is idea what the scoops on the baffles can look like...
baffle designs
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