Remington model 121 Actual load

The illustration shown below was scanned off a Remington factory parts list, and are factory part numbers. This is important as about all obsolete parts suppliers use ONLY factory or closely associated numbers where ever possible so everyone is on the same page.

Note, for some of the older firearms, many over 100 years old, the factories never used what we now know as assembly drawings, but just views of many of the component parts & possibly randomly placed as seen below

The Above illustration taken from 1959 Remington factory parts list, but does not show actual size or relationship to the parts

Part Number	Nomenclature	Part Number	Nomenclature
601	Action Bar 22 RF	533	Magazine Follower, REM Special
164	Barrel, Short, Long, LR (1940)	78	Magazine Lever
607	Breech Block, 22 RF	22300	Magazine Lever Pin
707	Breech Block REM Special	79	Magazine Lever Spring
17015	Buttplate	34	Magazine Pin, S, L, LR
18788	Buttplate screw	234	Magazine Pin, REM Special
363	Buttstock	235	Magazine Plug, S, L, LR
411	Carrier S, L, LR	335	Magazine Plug, REM Special
311	Carrier Dog	538	Magazine Ring
19640	Carrier Dog Spring	39	Magazine Screw
121	Carrier Dog Spring Screw	340	Magazine Spring
215	Cartridge Stop, S, L, LR	344	Magazine Tube, Outer, S, L, LR
129	Ejector, Rem Special	397	Magazine Tube, Outer, REM Special
122	Ejector Plunger, S, L, LR	46	Mainspring
123	Ejector Plunger Case, S, L, LR	47	Mainspring Rod
128	Ejector Plunger Case Screw	17229	Rear Sight Leaf (1940 Series)
125	Ejector Plunger Spring, S, L, LR	25095	Rear Sight Step
124	Ejector Plunger Stop Screw, S, L, LR	17570	Rear Sight Screw
417	Extractor, S, L, LR	75	Plug Screw
517	Extractor, Rem Special	53	Receiver Bushing, Plain
18	Extractor Plunger	54	Receiver Bushing, Threaded
19	Extractor Spring	257	Retainer, S, L, LR
149	Firing Pin, S, L, LR	91	Retainer, REM Special
150	Firing Pin, REM Special	58	Safety button
126	Firing Pin Retaining Pin	59	Safety Plunger
222	Firing Pin Spring	60	Safety Plunger Pin
18592	Fore-end (series 1949)	61	Safety Spring
18537	Fore-end Escutcheon	363	Stock
18591	Forearm Screw, with lock washer	64	Stock Bolt
21076	Front Sight (series 1940)	118	Stock Bolt washer
529	Guard (Trigger)	66	Takedown Screw
530	Hammer	85	Takedown Screw retainer
31	Hammer Bushing	68	Trigger
32	Hammer Pin	69	Trigger Pin
342 1/2	Inner Magazine Assembly, (S, L, LR)	70	Trigger Spring
396	Inner Magazine Assembly, (REM Special)	71	Trigger Spring Case
19601	Magazine Follower, S, L, LR	.	.
.	.	.	.
112	Forearm Screw lock screw, Old Style	327	Forearm Screw, Scalloped, Old Style (uses #112 lock screw)
.	.	.	.