Submarine Base Invasion (Qiji 1730)

About this set

This is KEEPPLEY 1730 Invade Submarine Base from the Combat Zone series, a military building set listed at 1196 pieces and 6+, with a 2/5 difficulty rating that puts it in the easy-to-moderate range. The finished model is mostly black and grey with red and blue accents, built around a submarine with propellers, a periscope and missiles, plus a base scene, minifigures, a parachute and underwater thrusters; the box also highlights a 12-in-1 direct transformation feature. Sort parts by colour first, start with the submarine's internal frame, and fit the propellers and periscope before closing up the hull; attach the missiles and thrusters last while building the base scene alongside the figures. The parachute and transformation sections are the trickiest steps, so check each connection against the instructions. It suits builders aged 6 and up who like military subjects and submarine models, and the 2/5 difficulty makes it a reasonable pick for anyone new to clutch-built sets with a scene.