Long Barrel .22 Conversion

[sheepherder]

Steps in pictures

(1), (2), and (3) - Erma 22 SE/2 'Kit'
(4) 7 1/2" .22 barrel on Luger receiver
(4) Removing barrel with barrel vise & receiver wrench
(6) Turning off excess metal at breech end of barrel
(7) Drilling chamber plug 'blank' in 7/8" steel bar
(8) Turning down plug to fit in chamber
(9) Drilling out .22LR chamber for plug
(10) Reaming drilled hole
(11) Facing off blind end of drilled/reamed hole
(12) Milling plug sides to fit in Luger receiver
(13) Plug sides milled flat
(14) Plug snug fit in barrel
(15) Excess metal milled off plug
(16) Plug ready to cut ramp
(17) Muzzle skim cut for concentricity
(18) Plug milled for breechblock clearance
(19) Plug set up to mill ramp
(20) Ramp milled
(21) Cut milled in center of ramp
(22), (23) Slitting saw set up to mill extractor groove
(24) Centering slitting saw with drill bit & spirit level
(25) Finished extractor cut
(26) Reaming .22LR chamber; partially cut
(27) Finished reaming .22LR chamber
(28) Drilling receiver lug & barrel for setscrew
(29) Tapping receiver lug & barrel
(30) Installing setscrew
(31) Side view; finished conversion
(32) Oblique view
(33) Chamber view; toggle locked open