[DRG]

http://www.tanks-encyclopedia.com/ww2/nazi_germany/SdKfz-251_Hanomag.php

This type, and all the test prototypes, covered around 500 vehicles, including 486 -according to some sources /17 and /21. Normal provision for each Panzerdivision was around twenty-one in the armored infantry battalion, one in the regimental engineer company and seven in the armored reconnaissance company.

Sd.Kfz. 251/17 - Schützenpanzerwagen (2 cm) : (244 built). Early machines had unmodified 251 Ausf C and D bodies, and the 20mm gun ahd only a 80° traverse. They were pioneered by the SS panzerdivision Grossdeutschland. But the main production type was the Luftwaffe-Flakausführung, with extended side made of folding panels. Even folded, the gun still had a 360° traverse. The 20mm KwK38 comprised a small turret and pedestal mounting. They were built on the Ausf C only and usually 4 FLAK vehicles were led by a command version, similar but without the gun but with a FU-10 radio and frame antenna, and two Mg.34 or 42 for close defence.

Later on the version evolved. Auto-Union A.G. of Chemnitz built a prototype (Ausf C) followed by perhaps a dozen or so hybrid vehicles (D type), with a completely open rear and reconstructed driver compartment. The type was also called Sd.Kfz.30 or 261. In late 1944, a late model with a standard D body was equipped with a Schwebelafette or "gliding cradle" in a boxlike construction. Production figures remains unknown, perhaps 15 in all which served on the eastern front by nobvember 1944. The 20mm existed in two types, the Army KwK 38 and the Luftwaffe FLAK-38 which had similar performances, although they were found unable to deal with the heavily protected Russian Ll-2 Sturmoviks.

......so it's seems extremely odd to me that these units would be assigned to tow ATG's

...........and for those really paying attention they will know that despite what this article says Grossdeutschland was NOT an SS division......it's been 70 years since WW2 ended and still junk info is repeated as 'fact"