Derya Mk12 updates

[budmancan]

Ive been looking at getting a Derya Mk12 shotgun. Looking at them in the stores I noticed that newer ones have some changes to them. Two that I noticed are a larger mag release button and a smaller bolt release.
Does anybody know if there were any other changes made to the gun and should I be concerned on which one to get.

Thank you.

 

[Moe]

If you can get one with the large bolt release it is better.

I had to replace my late model with an old model bolt release for IPSC. Derya made the change due to guys complaining about the bolt release snagging clothes.

Some competitors (mostly Europe) remove the bolt release all together to avoid the over insertion bolt seize flaw the gun can have. I discovered a better fix is just to pop out the mag a bit below the bolt catch works to overcome this flaw.

Moe.

 

[S00py]

There was a redesign of the gas piston and they removed the o-ring from it. I believe the new one is considered more reliable, but the old o-ring is still in the manual. Not sure when they changed the barrel lock screw to a single rather than two stacked, haven't heard of any problems either way other than the disassembly instructions confusing people.