Chronology of Mossberg Firearms 1919 2019

1 MODEL INTRO DISC DESCRIPTION B 1931 1932 single shot bolt action .22, 2 versions C 1931 1932 single shot bolt action .22 larger than B K 1922 1931 slide action .22 rifle, single shot L 1929 1932 falling block rifle single shot .22 M 1928 1931 22 slide action, octagon barrel R 1930 1932 first bolt action repeater 22 tube fed S 1927 1931 same as K with shorter mag tube/barrel _____ 10 1933 1935 bolt action single shot 22 14 1934 1935 same as 10, beavertail stock, imp sights 15* 1934 1936 single shot 22 bolt action no details 20 1934 1935 single shot bolt action 22 with 24 bbl 21 1933 1935 same as 20 except with No 3 peep sight 24 1934 1935 same as 20 beavertail stock no other info 25 1935 1936 bolt action single shot 22 25A 1936 1938 same as 25, self-cocking action 25 ABT* 1935 1937 heavy barrel 25A no other details 26B 1938 1941 22 single shot, target sights.

2 New action 25BT* 1936 1936 heavy barrel 25 no other details 26C 1938- 1941 same as 26B with open iron sights 26T 1938 1942 smoothbore 22 single shot Targo _____ 30 1933 1935 bolt action single shot 22 No 3 peep sight 34 1934 1935 same as 30, beavertail stock 35 1935 1937 bolt action single shot 22 heavy target bbl target sights 35A 1937 1937 same as Model 35, master action bolt 35 ALS 1937 1939 35A with Lyman front/rear sights 35B 1938 1939 same as 35A, polymer trigger guard 40 1933 1935 bolt action .22 repeater No 3 peep sight _____ 42 1935 1937 .22 caliber bolt action box magazine repeater 42A 1937 1938 master action improvements on Model 42 42 ABT* 1937 1938 heavy barrel 42A no other details 42AS* 1937 1938 42A variant no other details L42A 1937 1940 left handed version of 42A left hand sights S42A* 1937 1940 42A variant no other details 42B 1938 1941 bolt action.

3 22 box mag, No 1A/No 4 front and rear target sights, 2A rear bbl sight 42BT* 1936 1937 heavy barrel Model 42 no other details 42C 1938 1941 same as 42B w/ bead front, no peep sight 42M 1940 1944 Mannlicher stock 22 box fed target sights 42M(a) 1944 1945 same as 42M change in extractors 42MB 1941 1943 Lend Lease WWII trainer, polymer trigger guard and buttplate 42MB(a) 1943 1943 Lend Lease WWII trainer new extractors 42M(b) 1945 1947 post-war civilian 42M, trap door buttplate S100 rear peep sight 42M(c) 1947 1949 S130 peep sight S107 bbl sight 42S* 1936 1937 42 variant no other details 42T 1940 1942 22 smooth bore based on master action 42A, Targo tube only, box fed mag 42TR 1940 1946 same as 42T with rifled extension added _____ MODEL INTRO DISC DESCRIPTION 43 1937 1938 master action box fed .22 target rifle with Lyman 57MS peep and 17A globe front L43 1937 1939 same as 43 left handed action and sight 43B 1938 1939 same as 43, polymer trigger guard 43S/43SS* 1937 1938 Model 43 variants no other details 44 1934 1935 22 tube fed same as 40, beavertail stock 44B 1938 1941 bolt action 22 box fed heavy target barrel, target sights 44US 1943 1945 22 bolt action box fed made for war dept target sights US PROPERTY 44US(a) 1944 1946 civilian post war change in sights swivels and adj trigger pull some US PROPERTY contract 44US(b) 1946 1947 same as 44US(a) change in extractors 44US(c) 1947 1948 same as 44US(b) S130 replaces S100 peep 44US(d) 1949 1949 same as 44US(c) new 3-pos front swivel plate _____ 45 1935 1937 bolt action.

4 22 tube fed 24 bbl target sights 45A 1937 1938 master action version Model 45 target sights 45AC 1937 1938 same as 45A peep sight omitted 45B 1938 1940 same as 45A, stock change, fixed swivels no peep sight, polymer buttplate, trigger guard 45BT* 1936 1937 heavy barrel Model 45 no other details 45C 1935 1937 same as Model 45 without peep sights 45S* 1935 1937 Model 45 variant no other details L45A 1937 1939 left handed version of 45A left handed sights _____ 46 1935 1937 bolt action .22 tube fed 26 bbl target sights 46A 1938 1940 master action version of Model 46, No 4 peep with selective 4A aperture 46 ALS 1938 1939 46A with Lyman front/rear sights 46AT 1937 1938 46A with target stock heavy bbl adj trigger pull 46B 1938 1942 .22 tube fed target sights polymer buttplate trigger guard change in adj trigger pull 46B(a) 1944 1947 S100 peep sight replaced No 4 46B(b) 1947 1949 change to S130 peep sight, S107 bbl sight 46BT 1938 1939 46B with target stock, heavy bbl change in adj trigger pull 46M 1939 1941 Mannlicher stock, S101, S102, S104 (No 4) 46M(a) 1945 1947 same as 46M, S100 peep S102 bbl sight 46M(b) 1947 1952 same as 46M(a) S130 peep S107 barrel sight 46 ALS 1938 1938 same as 46A with Lyman 57 and 17A L46 ALS 1937 1939 left handed 46 ALS left handed sights _____ 50 1939 1939 semi-auto.

5 22 tube fed through buttstock flatback version with flat receiver cap and rear lever safety slide, red/green fire/safe buttons 51 1939 1939 same as 50 with target sights, also flatback 51M 1939 1942 Mannlicher stock 22 semi-auto all new action and safety design target sights 51M(a) 1944 1945 same as 51M w/ No 4 peep sight std aperture 51M(b) 1945 1945 change to S100 peep sight _____ 100 ATR 2005 2014 centerfire top loading bolt action rifle, multi calibers various stock configurations wood/synthetic 140B 1957 1958 bolt action 22 box fed mag target sights 140K 1955 1958 same as 140B with open sights _____ Chronology of Mossberg Firearms 1919-2019 Rifles * Models referenced in service manuals only. Designated as special models, these could be other Spiegel model variants or private/hardware labels for other exclusive clients.

6 Designated Spiegel models appear in separate chart see page viii i MODEL INTRO DISC DESCRIPTION 142A 1949 1957 bolt action 22 box fed mag fold down forend S109 front/S108 rear peep sights 142K 1953 1956 same as 142K with open sights 142M 1949 1951 142 action with T-bolt handle and Mannlicher stock 144 1949 1954 22 clip fed heavy barrel target models re- placed 44US(d) S101 front/S130 peep sights 144LS 1954 1960 same as 144 with Lyman 57M/17A sights 144 LSA 1960 1967 same as 144 LSA with Mossberg S331 peep 144 LSB 1967 1987 same as 144 LSA with 27 bbl 1 diameter 144US 1960 1963 US Govt contract model replaced 44US _____ 146B 1949 1954 bolt action 22 tube fed, T-bolt handle S101/ S107/S130 sights 146B-A 1954 1957 same as 146B with round knob bolt handle, S137 sight replaced S107 _____ 151K 1950 1951.

7 22 semi auto tube fed through stock open sights, sporting stock 151M 1946 1947 same as 151K, target sights, Mannlicher stock 151M(a) 1947 1948 same as 151M, S130 sight replaced S100 151M(b) 1948 1954 same as 151M(a) polymer buttplate 151M(c) 1954 1957 same as 151M(b) change open sight to S137 152 1948 1957 .22 semi auto box fed mag fold down forend S109 front/S108 peep sights 152K 1950 1957 same as 152 with open sights _____ 220K 1960 1962 22 bolt action single shot New Haven econo- my brand same as 320K hammerless design 240C 1963 1963 22 bolt action box fed mag New Haven econ- omy brand, carbine stock and 18-1/2 bbl 240CS 1971 1971 Boy Scout variant of the 240C 240K 1960 1962 22 bolt action box fed mag New Haven econ - omy brand same as 340K hammerless design 246K 1962 1963 22 bolt action tube mag, New Haven brand same as 346K hammerless design _____ 250C 1962 1966.

8 22 semi-auto box fed mag, carbine, New Haven economy brand hammerless design 250CA 1966 1969 same as 250C , improved firing pin 250CB 1969 1970 same as 250CA, change to LR only mag 250CT 1970 1970 same as 250CB plain stock 250K 1959 1959 New Haven brand .22 semi-auto box fed mag same action as earlier 152 rifle length 250KA 1960 1960 New Haven Brand .22 semi-auto box fed mag new hammerless design S137 rear sight 250KB 1961 1962 same as 250KA with dovetail open sight _____ 251C 1968 1971 .22 semi-auto tube fed through stock, New Haven economy brand, hammerless action, carbine length 251CS 1970 1970 same as 251C special sights no other detail _____ 320B 1960 1966 .22 bolt action single shot target sights, swiv- els, hammerless design improved firing pin 320BA 1966 1967 same as 320B, change from S137 to S142 rear dovetail sight 320BB 1968 1971 same as 320BA, change in safety assy 320K 1958 1962.

9 22 single shot bolt action economy sights 320KA 1962 1966 same as 320K improved firing pin 320TR 1961 1962 Targo version of 320K with smooth bore and rifled tube inserts for 22 cal shot and LR 321B 1971 1974 .22 single shot target sights replaced 320BB 321K 1971 1980 .22 single shot open sights _____ 333 1972 1972 .22 semi-auto tube fed under bbl, Uni-Line model with ramp ft sight, Model 432 action _____ MODEL INTRO DISC DESCRIPTION 340B 1957 1960 .22 caliber bolt action box fed mag hammerless design S320, S330 target sights S137 bbl sight 340BA 1961 1967 same as 320B, walnut finish stock, S142 dovetail rear sight, improved firing pin 340BB 1967 1967 same as 340BA, walnut stock, change to 2384 mag 340BC 1968 1971 same as 340BB satin finish on receiver 340BD 1972 1975 same as 340BC walnut finish, no open sight 340K 1958 1960.

10 22 caliber bolt action box fed adjustable mag hammerless design open S137 barrel sight 340KA 1961 1966 same as 340K,improved firing pin, dovetail rear sight 340KB 1967 1967 white spacer added to stock 340KC 1968 1971 checkered stock 340M 1971 1973 walnut Mannlicher deluxe checkered stock 340TR 1961 1962 Targo version of 340K with smooth bore and rifled tube inserts for 22 cal shot and LR 341 1972 1984 followed 340KC, open sights, checkering _____ 342 1957 1959 same action as Model 340, carbine with fold down forend and target sights 342K 1958 1960 same as 342K with open sights S133/S134 342KA 1961 1966 same as 342K improved firing pin 342KB 1967 1967 same as 342KA change in magazines 342KC 1968 1971 change in stock, trigger guard, rear sight 344 1985 1986 same as 341, 20 slim bbl pressed checkering 344K 1985 1986 same as 344, true carbine 16-1/2 bbl _____ 346B 1958 1960.