This kit is a re-release of the original B-239 in Finnish Service of some years back, only doubled and with new decals. Each of the two planes comes with 8 sprues and 52 parts, 12 of which are for optional versions.
Assembly is straightforward in 8 steps: cockpit, fuselage, wings, main assembly, landing gear, engine, props, and canopy. I encountered no issues with fit and very little need for filler. The only issue needing fixing was that the anti-roll device stood a little proud of the turtleback and this affected the fit of the canopy. Optional parts are for the propeller style, cuffed or not, and canopy windscreen, as parts are provided for both the telescopic and reflector gun sight versions. You need not pick a color scheme until step 7, and speaking of same, there are decals and schemes for 3 aircraft.