U.S. M1 Carbine
Rock-Ola
Serial Number: 1707927

Background

Barrel Group

Barrel	type IIB	Rock-Ola undated
Barrel Skirt		long
Front Sight	type I	T R (Taylor Freezer Co. of Beloit, WI for Rock-Ola)
Barrel Band/Swivel	type III	MMQ on band, bayonet lug removed
Slide	type III	Rock-Ola

Barrel has Rock-Ola name on top of barrel near front sight and on the right side of the gas piston housing. Barrel band has had the bayonet lug cut off, not uncommon in Austria. Slide has the last four digits of the serial number stamped in the slide arm.

Stock Group

Stock	type I	RMC (Rock-Ola Music Company)
Handguard	type I	RMC (Rock-Ola Music Company)
Buttplate		National Postal Meter

Last four digits of receiver serial number stamped in slingwell and underside of handguard. Letter R scratched into inside of stock in slide cut.

Receiver Group

Receiver	type II	Rock-Ola
Rear Sight	type II	H in shield (replacement GI sight)
Operating Spring Tunnel Housing		attached
Recoil Plate	type III	Rock-Ola

Bavaria Border Police stamped into top of receiver left of bolt.

Bolt Group

Bolt	flat	UN stamped on right lug, R etched on left lug (Union Switch & Signal Corp. of Swissvale, PA for Rock-Ola)
Ejector	type I
Extractor	type III	R (Rock-Ola)
Extractor Plunger	type II
Firing Pin	type I	Rock-Ola

Bolt has last four digits of receiver serial number etched on top. War Baby! by Larry Ruth p.400 indicates Union Switch & Signal supplied Rock-Ola with 3278 bolts between August and October 1943 and the bolts were marked UN-R on the face of the left lug. The bolt on this carbine is marked UN on the face of the right lug and etched with the letter R on the face of the left lug.

Trigger Group

Trigger Housing	type II	Rock-Ola
Trigger		Rock-Ola
Sear	type I	Rock-Ola
Hammer	type III	KR (Kal Machine Works of Chicago, IL for Rock-Ola)
Trigger Housing Pin	type II
Safety	type IV rotary	S encircled
Magazine Catch	type IIA	EPB (Eaton Pond Co. of Springfield, MA for IBM)

Last four digits of receiver serial numbed stamped in rear of trigger housing at top.