____________TKS w/20 mm gun (nkm)*
*
Number in service: about 24*
*
Only in 1939 a batch of TKS tankettes were armed*
with a Polish 20mm wz.38 FK Model A automatic*
cannon. The gun was designated in Poland as the *
'heaviest machine gun' (Polish abbreviation: nkm).*
Unfortunately, a mass production of the FK-A nkm was*
just starting when the war broke out, and their*
number was scarse.*
*
At least 24 such modified vehicles were completed *
in summer 1939. Only few tankette companies *
or squadrons received four such vehicles.*
About half of them went to the two Polish motorized*
brigades.*
TKS tankettes fitted with 20mm guns were real tank*
hunters, being very small and hard to spot.*
The gun was capable of piercing all armor in 1939.* 
*
_____________[description by PIBWL]*