O-Ring Derya Mk.12

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stormdog

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GunNutz
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Would anyone know what size O ring fits the gas system in a Derya Mk 12. I want to get a spare but no response from O Dell the distributor. I thought I would ask before trying to dig it out (its captured in the cylinder). Thanks is advance!!
 
stormdog said:
Would anyone know what size O ring fits the gas system in a Derya Mk 12. I want to get a spare but no response from O Dell the distributor. I thought I would ask before trying to dig it out (its captured in the cylinder). Thanks is advance!!
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The Axor is 16mm x2mm. I found out by going to Axor Arms on fb & messaging them. Fixed my cycling issues. I know they are very similar as they pretty much all made in same factory.
 
Did anyone get confirmation on this? As I'm pretty sure my gas piston is MISSING the O ring (part 66). Mind you, my gas piston looks different than what's shown in the manual, so they may have changed their design?
 
stormdog said:
Would anyone know what size O ring fits the gas system in a Derya Mk 12. I want to get a spare but no response from O Dell the distributor. I thought I would ask before trying to dig it out (its captured in the cylinder). Thanks is advance!!
Click to expand...

Shocking ! another Turkish made firearm that distributors fail to step up and provide assistance for.
 
adical said:
Did anyone get confirmation on this? As I'm pretty sure my gas piston is MISSING the O ring (part 66). Mind you, my gas piston looks different than what's shown in the manual, so they may have changed their design?
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There is only 1 o ring that rides internally on the gas piston. The size is 25mm (inside diameter) x 2mm ( the thickness of the ring material)
 
adical said:
Did anyone get confirmation on this? As I'm pretty sure my gas piston is MISSING the O ring (part 66). Mind you, my gas piston looks different than what's shown in the manual, so they may have changed their design?
Click to expand...

Sounds like you’ve got the Gen 2 version of the MK12. Apparently another difference is that the barrel is held on with one bolt instead of 2 like the Gen 1 I have. I’d like to know if I could swap out my oring piston for the non oring or if other parts need to be changed. Probably next to impossible to get it anyway.
 
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