From Manual of 1877 :
Garnison-Bataillon Nr.1 des IV.Armee-Korps, 3.Kompagnie, Gewehr Nr.50 . . . . . . . . . . . IV.G.B.I.3.50.
So i would tend here to 3.Garnison Batallion des V.Armee Korps, 3.Kompanie, Waffe nr.24
Guard Dragoon Rgt Nr. 1, 3rd squadron, weapon 35I have two M71 carbines. I'd be very grateful if you'd tell me what the regimental markings mean:
The first has on the flat of the butplate 1.G.D.3.35.
The other has on the upper tang of the buttplate just 15.U.