Mossberg® .22 Rifle Parts

The following listing includes the most commonly requested parts for the most commonly owned Mossberg® .22 caliber rifles. We carry many more parts for each of these models than we would have room to list here. On the flip side, while we try to be sure that every item for every model listed below is currently in stock, we are dealing with obsolete models as much as 60-plus years out of date. Original sights and bolts have become very scarce recently.  Calling us at 636-937-6401 is the best way to assure that we have what you are looking for. You may also inquire by e-mail to vic@havlinsales.com. Please note that while models may be grouped here for pricing similarity and space, each model is distinctly unique and we must have the exact model number in order to fill your request, i.e., Model 42 and Model 42A are very different models. Parts may be good condition used or new production, and depending on item, fitting may be required by a qualified gunsmith to insure proper function and safety.

New Item!
Reproduction Targo RA1 rifle adapter and TT1 smoothbore extension
If you have a Targo missing the rifled or smooth bore extension, this is the low-cost solution. Faithful reproductions of the rare rifle adapter and smoothbore extension for the 1940s 42T, 42TR and 26T smoothbore Targo models.

Rollstamp: "MOSSBERG NO. RA1 RIFLE ADAPTER", knurled end, recess for spanner wrench, correct blue finish. Approx 4-7/8" long. Rifled bore extension designed for .22 rifle ammunition

Rollstamp: "MOSSBERG NO. TT1 TARGO TUBE", knurled end, hole for spanner wrench, correct blue finish. Approx 7-3/4" long. Smoothbore choke extension designed for .22LR shotshells

Note: Each tube can be identified as a reproduction by a small pin-punch proof mark on back of each tube located near the knurling to prevent mis-identification as an original.

ITEM: RA1: $38
ITEM: TTI: $45

Replacement Deluxe Peep Sight
Mossberg 22 Target Peep sight, manufacture with deluxe aperture disc, adjustable windage and elevation, brushed alloy finish, replaces S100, S130, S108 and S331 Mossberg sights without modification. Also replaces S104 or No 4 peep sight – may require stock modification to accommodate mounting bracket. Screws provided.
Item: OM22 - Price $65 Back in Stock


OM 22 Peep Sight



OM 22 mounted on Mossberg 152

New Reference Photo Gallery!
The two most-requested parts for .22 rifles are firing pins and clip magazines.  For your convenience, we have added photo galleries of the .22 rifle firing pins and magazines that we currently stock.  Please view these pages if you need a firing pin or magazine. 

.22 rifle firing pin photo gallery

.22 rifle clip magazine photo gallery

* Not Always in Stock

Models B, K, M, S, R No parts available.

Model L No parts available.

Brownie Pistol No parts available.

Models 10, 14, 15, 25, 125 No parts available.

Models 25BT, 25ABT, 20, 21, 24, 30, 34, 40, 44 Limited parts available. Call 636-937-6401.

Models 26B, 26C
Stock $45
New! Trigger Guard $28
New! OM 22 peep sight $65

Models 35, 42, 46
Extractor right = $14 (models 35 and 46 only)
Extractor left = $14 (model 35 and 46 only)

Model 43
Lyman®17-A front globe sight with 7 inserts $38
New! OM 22 peep sight $65
Magazine 7 round $48
Detachable sling swivels set of two $32 each

BACK IN STOCK – NEW VENDOR! Mossberg 1-1/4" detachable sling swivels for .22 rifles. Used on all .22 sporting and target models from 1936-1957, these are newly manufactured detachable swivels which twist and lock into the raised swivel bases on the Model 42, 43, 44, 45, 46, 51, 140, 144, 146 and 151 series models. These are brand new, blue, steel swivels. Each $32. Does not include swivel bases – these must still be attached to your stock to use these.


Item: DSWIV $32 each


Item:  LYM17A  $38.  Lyman® 17-A globe front target sight with 7 apertures, fits Mossberg target rifles with dovetail notch, .494 height.

Models 42A, S42A, 42AS, 42ABT
Trigger Guard $18
New! OM 22 peep sight $65
Magazine 7 round $48
Detachable sling swivels $32 each

Models 35A, 35B, 45A, 45AC, 46A, 46AT, 46BT
Firing pin $28
Extractor $14 (specify right or left side)
OM 22 peep sight $65
Trigger guard $21
Detachable sling swivels $32 each

(From 1940 Mossberg product catalog)

Models 42B, 42C, 42M, 42M(a), 42M(b), 42MB, 42M(c), 42M(c), 42TR
Trigger Guard $18
New! OM 22 peep sight $65
Magazine 7 round $48
Detachable sling swivels $32 each

(From 1946 Mossberg product catalog)

Models 44B, 44US, 44US(a), 44US(b), 44US(c), 44US(d)
Trigger guard $18
New! OM 22 peep sight $65
Magazine 7 round $48
Lyman®17-A front globe sight with 7 inserts $38
Military oil leather sling $38
Detachable sling swivels $32 each

BEST SELLER!  MOSSBERG .22 SCOPE MOUNT 
Now available! No gunsmithing required!  Use any diameter scope!    

Mossberg side mount and screws – ONLY $32

For models 26B, 26C, 42A, 42B, 42C, 42M (all variants), 43, 44US (all civilian variants), 46A, 46B and 46M (all variants) and most Wards-Westernfield rifles side-tapped on 1-5/8” centers (made by Mossberg).  Mount conforms to curvature of receiver and features Weaver style top platform.  Note:  Approx 30% of military marked 44US rifles are not drilled and tapped for scopes.  Please check your receiver. We can provide D & T specs if you wish to drill and tap.

Will center any diameter scope directly over the barrel – no longer limits you to ¾” tubes. Perfect for modern 1” diameter scope tubes. Quality mount allows you to keep the iron sights in place.  Remove bolt cover, if present, to allow bolt to clear mount base. Add rings and scope of your choice.  Comes with two button sock mounting screws and Allen wrench.  $32 per mount.  

ITEM: M22 Super Side Scope Mount = $32

NEW! Mossberg 22 scope base for grooved receivers!

Here's the solution for those hard to scope Mossbergs from 1949-1986. Matte Black pair of offset rings for Mossberg 22's with grooved receivers, 140, 142, 144, 146, 151, 152, 250, 340, 341, 342, 344, 346, 350, 351, 352, 353, 377, 380, 640 all variants. Rear ring cantilevers back for proper eye relief with small mounting footprint, allows you to mount a modern 1" scope properly. Shown on Mossberg Model 341.





ITEM: 274M long offset rings, matte black pair: $38 - Back in Stock!





Military Oil leather sling with brass frog clasps and leather keepers, great for Mossberg 44US and other 22s from the 1930s, 40s and 50s. Walnut stain, dual-hole adjustments, works well with detachable sling swivels

ITEM: SLING64A $38

(From 1938 Mossberg product catalog)

Models 45B, 46B, 46B(a), 46B(b), 46M, 46M(a), 46M(b)
Extractor $14 (specify right or left side)
Firing pin $28
OM 22 peep sight $65
Trigger guard $21
Inner mag tube $38 (must be shortened to fit 46M series)
Detachable sling swivels $32 each

Models 50, 51M
Inner mag tube $38 
cocking knob and sleeve (two piece) $25

Models 51M(a), 51M(b)
Firing pin $18 *
Detachable sling swivels $32 each
Inner mag tube $38
Trigger Guard $21
Cocking knob and sleeve (two piece) $25
OM 22 peep sight $65

Newly manufactured cocking knob and sleeve fits Mossberg 50, 51, 51M, 51M(a) and 51M(b) with cone shaped receiver caps. Does not fit models with flat disc receiver cap, Knurled, blued and tapered off original specs $25 for assembly (sold only as a pair). BACK IN STOCK

Models 140B, 140K, 142A, 142K
Firing pin $18
Extractor $8
Ejector $8
Magazine (10 round) $38
S133 front dovetail post sight $8
New! OM 22 peep sight $65
New! Fold down forearm (black polymer) for 142 $32
Detachable sling swivels 140B  $32 each

Models 144, 144LS, 144LS-A, 144LS-B
Firing pin $18
Extractor $8
Ejector $8
Magazine (10 round) $38
New! OM 22 peep sight $65
Lyman 17-A front globe sight with inserts $38

Models 146B, 146B(a)
Firing pin $18
Extractor $12 (specify right or left side)
OM 22 peep sight $65
Detachable sling swivels $32 each
Inner mag tube $34

Models 151K, 151M, 151M(a), 151M(b), 151M(c)
Firing pin $18
Extractor $9
New! OM 22 peep sight $65
Detachable sling swivels  $32 each
Inner mag tube $38
Trigger Guard $21
Black polymer buttplate $18 (151K, 151M(b), 151m(c) only)

Models 152, 152K
Firing pin $18
Extractor $9
Sear $9
Disconnector $9
Disconnector/sear spring $4
Magazine (10 round) $38
S133 front dovetail post sight $8
New! OM 22 peep sight $65
New! Fold down forearm (black polymer) $32



Models 220K, 320K, 320KA, 320B, 320BA, 320BB, 320TR, 321B, 321K
Complete bolt $65
Firing pin $18 (later style only)
Extractor $8
Trigger guard long $18
Trigger guard short $6
Trigger group complete $32
S133 front dovetail post sight $8
Bolt cover $8
Dovetail sporting rear leaf sight $25


(From 1959 Mossberg dealer spiff)
Models 240C, 340B, 340K, 340BA, 340BB, 340KA, 340KB, 340TR, 341, 344, 344K
Complete bolt $65
Firing pin $18 (later style only)
Extractor $8
Trigger guard long $18
Trigger guard short $6
Magazine (10 round) $38
Trigger group complete $32
S133 front dovetail post sight $8
Bolt cover $8
Dovetail sporting rear leaf sight $25


Item: R244 trigger guard $21 (fits 51M, 151M, 46B, 46M all variants)
Item: R145 trigger guard $18 (fits 42B, 42C, 42M 43B, 44B, 44US all variants)
Item: R943 trigger guard $18 (fits many models from 1960-1980)
Item: R250 trigger guard $6 (fits New Haven and models with shorter guard)
Item: R380 trigger guard $6 (fits Models 353, 377, 380 and late semi-autos)
New! R413 trigger guard $28 (fits 26B, 26C, not pictured)

Trigger guards may require slight fitting to your stock inlet


Red/Green fire/safe peg indicators used on all Mossberg 22s and bolt action shotguns from 1938-1986. $1 each
Item: REDPEG $1
Item: GRNPEG $1

Models 342, 342K, 342KA, 342KB, 342KC
Complete bolt $65
Firing pin $18 (later style only)
Extractor $8
Trigger guard long $18
Trigger guard short $6
Magazine (10 round) $38
Trigger group complete $32
S133 front dovetail post sight $8
Bolt cover $8
Dovetail sporting rear leaf sight $25
NEW!  OM 22 peep sight (342 only) $65
NEW!  Fold down forearm (black polymer) for 342 $32

Models 246K, 346B, 346BA, 346K, 346KA, 346KB, 346KC
Firing pin $18 (later style only)
Extractor $14 (specify right or left side)
Trigger guard long $18 Trigger guard long $18
Trigger guard short $6
Dovetail sporting rear leaf sight $25

Models 250C, 250CA, 250CB, 350K, 350KA, 350KB, 350KC
Firing pin $18
Extractor $9
Sear $9
Disconnector $9
Disconnector/sear spring $4
Trigger guard long $18
Trigger guard short $6
Magazine (10 round) $38
S133 front dovetail post sight $8
Dovetail sporting rear leaf sight $25

Models 251K, 251C, 351K, 351KA, 351KB
Firing pin $18
Extractor $9
Sear $9
Disconnector $9
Disconnector/sear spring $4
Trigger guard long $18
Trigger guard short $6
S133 front dovetail post sight $8
Dovetail sporting rear leaf sight $25
Inner mag tube $38

Models 352, 352K, 352K-A, 352K-B, 353, 453
Firing pin $18
Extractor $9
Sear $9
Disconnector $9
Disconnector/sear spring $4
Trigger guard long $18
Trigger guard short $6
Magazine (10 round) $38
S133 front dovetail post sight $8
Dovetail sporting rear leaf sight $25
OM 22 peep sight $65 (352 only)
NEW!  Fold down forearm (black polymer) for 352, 353, 453 $32

Models 377, 380
Complete bolt $65
Firing pin $18
Extractor $9
Sear $9
Disconnector $9
Disconnector/sear spring $4
Trigger Guard $6
S133 front dovetail post sight $8
Open rear sight $25
Scope base $10
Inner mag tube $38

Models 333, 430, 432 Uniline® Models
Limited parts available.
Please call 636-937-6401
for price & availability.

Models 400, 400A, 402, 402A
Firing pin $21 *
Right Extractor $6
Left Extractor $6
Ejector $6
S133 front dovetail post sight $8
open rear sight $25


Models 620K, 620KA, 720
Firing pin $18 (later style only)
Extractor $9
Ejector $6
Trigger guard long $18
Trigger guard short $6
S133 front dovetail post sight $8
Dovetail sporting rear leaf sight $25

Models 640K, 640KS, 640KA, 640KB, 640KC, 640KD, 642K, 740T
Firing pin $18 (later style only)
Extractor $9
Ejector $6
Trigger guard long $18
Trigger guard short $6
Magazine (5 round) $38
S133 front dovetail post sight $8
S141/S144 sporting rear sight $25
16B fold down rear sight $18 (640KD, 740T)
NEW!  Fold down forearm (black polymer) for 642 $32

Models 702 New "Plinkster", 715 Tac-22
Magazine (10 round) $24
Magazine (25 round) $38 cannot ship to CA, CO, CT, IL, MA, MD, NJ, NY


New 702/802 sporting rear sight, adjustable for windage and elevation, with screws (will not fit the older 22 rifles, we tried it!)
ITEM: 702REAR $25

* Not Always in Stock.

.22 Rifle Firing Pins

1. Models 26B, 26C out of stock
2.  Models 42A, 42B, 42C, 42M (all variants), 43, 43B, 44US (all variants) $18 (will not fit older Model 42 pre-master action or “long-bolt” rifles). Out of stock, no ETA at this time, no current supplier
3.  Models 45A, 45B, 46A, 46B or 46M (all variants) $28 (will not fit older 45 or 46 pre-master action or “long-bolt” rifles). *not always in stock
4.  Models 140, 142, 144 (all variants) $18
5.  Models 146B, 146B(a) $18 * not always in stock
6.  Models 320, 340, 342, 346 (variants that take new style pin) $18
7.  Models 50, 51, 51M (all variants) $18 *not always in stock
8.  Models 151K, 151M (all variants) 152, 152K, 250K $18
9.  Models 250C, 350K, 350KA, 351K, 351KA, 352, 352K, 352KA, 352KB $18
10.  Models 250CA, 250CB, 251, 350KB, 351KB, 351KC, 352KC, 353, 377, 380 $18
11.  Model 400, 400A, 402, 402A “Palomino” $21 *
12.  Models 620, 640, 740 “Chuckster” (variants that take new style pin) $18
 

.22 Rifle Box Magazines

Connecticut residents are required to prove that they are eligible to purchase magazines by providing a copy of their ammunition certificate, long gun permit or pistol permit to Havlin Sales. The shipping address for the order must match the address on the permit. A scanned copy of the eligibility certificate may be sent by email to vic@havlinsales.com

General Update on Mossberg Mags

Note that the magazines for the 42.43.44 series are back in production. We are working with the same international supplier who is supplying this item for other retailers. We have tested fit and function before offering these through our company and are pleased to report that they perform as well as any aftermarket mag that has been produced for the vintage Mossberg models. They look good, are a faithful reproduction and fitting is at a minimum or not needed at all. These are 7-round mags, complete with short adapter

Models 42 (all variants), 43
44B, 44US (all variants)
7-round w/ short adapter
ITEM R118 $48 in stock


Models 140, 142, 144
152, 250, 350, 352, 353
10-shot 22LR
ITEM 980M $38 in stock

Models 240, 340, 341, 342, 344
10-shot 22LR
ITEM: 293M $38 Back in Stock

Models 640, 740
All variants .22 magnum
5-shot 22WMR
ITEM:  22WMR $38



Model 702 Plinkster
10-shot 22LR
ITEM: M702 $24 in stock


Blaze/Blaze-47
10-shot 22LR
ITEM: BLZ10 $34 in stock



New! Model 715 Tactical 25-round 22LR fits models with AR-15 style stocks
ITEM: 715TAC22 $38 in stock cannot ship to CA, CO, CT, IL, MA, MD, NJ, NY.
Limited availability – currently in stock by inventory fluctuates dramatically. We are currently caught up on customer back orders but this could change. If mags sell out we will hold order and fill when new shipments come in. Limit two mags per customer



New! Model 702 hi-cap 25 round 22LR fits models with sporting stocks
ITEM: 70225 $38 in stock cannot ship to CA, CO, CT, IL, MA, MD, NJ, NY
Limited availability – currently in stock by inventory fluctuates dramatically. We are currently caught up on customer back orders but this could change. If mags sell out we will hold order and fill when new shipments come in. Limit two mags per customer

Sight Accessories 

ITEM:  HOOD  $8
Fits .22 front target sights S101 and S106 used 1938-1957
Does not fit MID550 sight or M44 military fixed blade sight

ITEM:  AP104 $15
Peep discs for the No. 4, S104 peep sight with original odd-ball 8 x 50 threads.  New mfg USA.  Target aperture.

ITEM:  AP130  $15 Back in stock!
New mfg in USA peep discs for the S130 sights with smooth shaft and retaining clip.

ITEM:  AP100108  $15
Deluxe aperture disc fits S100, S108 peep sights with 8 x 40 threads.  New mfg USA.

ITEM:  AP330331  $15
Last of the original peep discs for the S330, S331, Lyman 57, Redfield, Williams and other makers with standard 12 x 40 threads. ½" OD disc


ITEM: AP0M22 $15
Replacement 1" diameter deluxe aperture disc fits the new OM 22 peep sight as well as many original Lyman and Williams/Redfield peep sights with standard 12 x 40 threads

ITEM:  ELEV22 $2
Fits most sporting barrel sights 1958-1986

NEW! ITEM: FT22  $8
Economy front sight fits all 3/8” dovetails and many Mossberg 22s, including 44US military, most of the 140, 142, 152 “K” models, New Haven 22s and economy rifles from 1960-1988

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