
3.7cm for Flak 37, comes in three pieces, flash suppressor, barrel and collar. The flash suppressor is especially nice with all the holed drilled and the fluting along the sides machined out
The second is from Model Point

This set comes with two barrels and is designed to replace the kit's coax mg. Very nicely done also with the end of the barrel machined out and very thin.
I purchased the Aber from Hobby Island in Houston at the ASMS show for $13.99 and the Model Point direct from www.modelpoint.us for $4.85. Great service by the way and fast shipping.
Regards,
Robert