.
Drozd barrels screw straght in unless it's an early model Mak (pre 1999)
(NEVER unscrew without the mag in place)
Few good links if they're still there >
http://www.geocities.com/airecolabora/baikal.htm
http://www.makarov.com/
http://www.makarov.com/co2/instructions.html
grips>
http://www.makarov.com/graphics/co2/CO2_SE2.jpg
ATB
Pete
.