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666.66

SPA M22 conversion to .30 with 650 mm blank barrel, SSG, regulated, balanced valve, porting, retracting bolt, etc... 100 fpe with 68 grain handmade bullets (from 220 bar gives 18 regulated shots and 5 more "useful")... very light handmade carbon fiber stock. handmade full carbon fiber shroud...

good morning jiikuu, To make the bolt absolutely safe i choose an easier way than the "L" shape milled groove you did. I change the original M5 allen with a modified one i made in my lathe from a good quality steel (Uddeholm Corrax) After heat treated this (inox) steel became 45-50 HRC...

Hello from Kefalonia Island, West Greece, I just finish a conversion of one SPA M22, from .25 to .30, with a Spanish barrel. I used balanced valve, a little heavier hammer, SSG to control the power and the bounce and I modified the rear bolt to move back after pushing the pellet in the proper...