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SRD9 Piston threading depth

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http://sigforum.com/eve/forums/a/tpc/f/380105858/m/6430038174

June 30, 2020, 04:43 PM
Brkdnc
SRD9 Piston threading depth
HI, All Picked up my SRD9 can and I wanting to install it on my Kalashnikov KP-9 SBR

Issue I think will be fine but need to be sure, 1/28 Piston the threading bottoms out at .500" threading on my barrel is about .620" in length. So Piston bottoms out.

Will that Work?


June 30, 2020, 04:58 PM
SigM4
Should be fine (make sure to keep it screwed on tight) but a fixed mount might be a better option if you can find one.



Success always occurs in private, and failure in full view.
June 30, 2020, 04:59 PM
AZSigs
Put the piston back in the can and screw the can on. I think you may see less of a problem.




Getting shot is no achievement. Hitting your enemy is. FFL(01) NRA Endowment Member
June 30, 2020, 05:40 PM
Brkdnc
quote:
Originally posted by AZSigs:
Put the piston back in the can and screw the can on. I think you may see less of a problem.


I don't think so, piston can only go on so far.


I am thinking a small spacer would be the Idea to be safe I only need 1/8" thick, all are 1/4" which might not leave enough threads to attach safely.



Does look nice on my P226 SAO I got

June 30, 2020, 05:45 PM
George from Alaska
I would call the shop engineers at Sig.


P220 European
P220 Scorpion
P220 10mm Legion
MK25
P226 Legion
P226 SAO Legion
P229 Legion
556 rifle, my favorite 556
P320 M17 (not the expensive
one) with Leupold DPP
P227 Tac-ops
machineguns
suppressors
07/02
June 30, 2020, 06:50 PM
SIGfourme
You are replacing the spring with a fixed barrel spacer?
As M4 said-shouldn’t be a problem.
July 01, 2020, 10:27 AM
Brkdnc
quote:
Originally posted by SIGfourme:
You are replacing the spring with a fixed barrel spacer?
As M4 said-shouldn’t be a problem.


Fixed spacer is in it.

OK

Thanks for the Answers
July 01, 2020, 12:22 PM
SigM4
In this case you’re indexing off the end of the muzzle rather than the shoulder of the threads.



Success always occurs in private, and failure in full view.