Befähigungsprüfung Waffengewerbe (Büchsenmacher) Practice Questions - Befähigungsprüfung Waffengewerbe (Büchsenmacher) (Austria) Exam

A ball-bearing locking system (Kugelverschluss) where hardened steel balls are forced radially outward into an annular receiver groove by a central internal plunger. A rack-and-pinion 1:2 planetary gear drive rotating a helical six-lug bolt head. An eccentric rotating roller mechanism derived from the MG 42 machine gun. A cross-bolt wedge sliding horizontally through the rear of the breech block.