Remington 12 Exploded Views

The illustration shown below was taken from the NRA Firearms Assembly book and their part numbers converted below to reflect 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

The Above illustration taken from NRA Firearms Assembly book, & shows the peep sighted target version,
the standard model would not have the target sights nor sling swivel stud on the magazine ring
Carriers were made in about 6 different configurations depending on vintage and caliber

Ref.	Part Number	Nomenclature	Ref.	Part Number	Nomenclature
1	22	Firing Pin Spring	29	44 Rd	Magazine tube, outer, (Round Barrel)
2	23	Firing Pin Spring Guide	29	44 Oct	Magazine tube, outer, (Octagon Barrel)
3	21	Firing Pin Pin	30	27	Forearm Screw, Plain, series 1909 (Shown)
4	21	Ejector Pin	30	27-S	Forearm Screw, Scalloped
5	53	Receiver Bushing, Plain	.	112	Forearm Screw Lock Screw (fits 27-S)
6	66	Takedown Screw	31	24	Forearm
7	85	Takedown Screw Retainer	32	8	Buttplate
8	220	Firing Pin, (series 1909)	33	17810W	Buttplate screw
9	407	Breech Bolt, 22 RF	34	62	Buttstock, Regular Straight Grip Version
10	19	Extractor Spring	34	63	Buttstock, Gallery Pistol Grip Version
11	217	Extractor	35	64	Stock Bolt
12	18	Extractor Plunger	36	65	Stock Bolt washer
13	54	Receiver Bushing, threaded	37	37	Ejector Spring Screw
14	.	Receiver	38	36	Ejector Spring
15	42 1/2 Rd	Magazine Assembly, (22 RF round barrel)	39	.	Receiver Tang Sight
15	42 1/2 Oct	Magazine Assembly, (22 RF octagon barrel)	40	.	Receiver Sight Screw
16	5	Barrel, Round	41	429	Trigger plate
17	228	Front Sight, Regular	42	68	Trigger
17	.	Front Sight, (Gallery, Globe)	43	70	Trigger Spring
18	57	Retainer, (series 1909, under s/n 650,000)	44	71	Trigger Spring Plunger
.	257	Retainer, (over s/n 650,000)	45	411	Carrier
19	13	Carrier Dog Pin	46	60	Safety Plunger Pin
20	15	Cartridge Stop	47	47	Mainspring Rod
21	514	Carrier Dog Spring	48	46	Mainspring
22	212	Carrier Dog	49	61	Safety Spring
23	2	Action Bar Plunger	50	59	Safety Spring Plunger
24	3	Action Bar Plunger Pin	51	58	Safety button
25	4	Action Bar Plunger Spring	52	32	Hammer Pin
26	39	Magazine Screw	53	31	Hammer Bushing
27	201	Action Bar	54	430	Hammer
28	138	Magazine ring	55	69	Trigger Pin
Note - There are 3 different series of this gun, 1909, 1926 & 1949, plus 4 different variations. So some parts may not be as they appear in the illustration.