http://www.gunbroker.com/item/586677513
Nice looking 1934 MG34 BSW for sale on G/B, not mine.
"Form 4", probably can't be purchased by mere mortals.
The ad writer makes some confusing statements. Aren't ALL MG34's "select-fire"?
The gun does have some parts from the rare "regler" rate-reducing system. The pistol grip has the "slow/fast" button, or possibly "useless-hole plug" substitution. Was it built as a regler gun? Is the receiver the special one drilled and milled in the back for the rate-reducing system? Any other of these special parts inside the grip and receiver?....Phil