029 recoil mod

[bushwackr]

Hello all Can I add another recoil arm to my cover on my 029. I'm doing the 039 with the pop up. So compression will probably be higher. I see it only has 1 , I see there's a hole for 2. Does anyone know what parts I need to do it? An arm and spring?

 

[Kamn]

I swapped in a p&c for an 039 in my 029 and didn't need a decomp or any changes to the recoil

 

[bushwackr]

Ok ya I did it with a Chinese p/c and it was fine, didn't know how much the domed piston changes it