The SdKfz 251/21, also known as the Mittlerer Schutzenpanzerwagen – Drilling MG 151, was a very effective production anti-aircraft version of the SdKfz 251 half-track. Mounted with three excellent 15mm MG 151/15 or 20mm MG 151/20 machine guns on a compact pedestal behind a small armored shield, having a rate of 700 rounds per minute per gun, these modified SdKfz251 half-tracks could provide very effective defensive fire against the Allied aircraft.

Special Features:
- Conical pedestal mount w/accurate detail
- MG151 with detailed cradle
- "ez-Track" specially for Sd.Kfz.251
- Early type individual track link included
- Metal width indicator poles
- Bonus aluminium barrel heads
- Bonus crew uniform and boots
- Various decal markings provided