The purpose of this page is to show which parts will interchange among the commonly found models of Mosin Nagant rifles to aid in repair or restoration. Rare variations such as the M1907 and M27rv carbines are not covered here. Eastern European M44s and the Chinese T53 are the same as the Soviet M44 unless otherwise noted. The Hungarian and Romanian M91/30s are the same as the Soviet M91/30 with the exception of the Romanian trigger and sear. While there are variations in style between parts from different eras and countries of production, this page is primarily concerned with functionality. For more information on what style of parts are "correct" for a particular rifle, see the Mosin Nagant Features section. For information on the correct parts markings for a particular rifle, see the Mosin Nagant Rifle Guide to Proofs and Markings section. When further information on a part listed on this page is available on 7.62x54r.net it is linked from the part name. The rifle used to illustrate the parts breakdown is a Soviet M91/30 and other models will vary. See the pages linked above for specific information. For instructions on disassembly of all models see the Mosin Nagant Rifle Exploded Views and Disassembly page.

1.  Receiver and barrel

Although there are many different variations of receivers, they all have the same basic pattern and thread sizes. Barrels are generally not interchangeable between models, although the barrel threads are the same pattern for all models in all eras from all manufacturers.

4.  Magazine body/triggerguard

These are generally interchangeable with two exceptions that both involve Finnish modifications. The first is the addition of a small dimple in the side of the body to help prevent rim jams when feeding. Unmodified magazine bodies would be incorrect on M28/30s and M39s, but they will fit. The second is lengthening of the trigger hole to accommodate the M27 style trigger and this type is necessary when an M27 style trigger is used, regardless of the model rifle.

5.  Nosecap

All nosecaps are interchangeable with the exception of the M27, M28, M28/30, and M39 types. These must be used with the corresponding type of stock except the M28 and M28/30 types which will interchange.

6.  Nosecap screw

The nosecap screws follow the same rules as the nosecaps.

13 and 14.  Stock recoil bolt and nut

These are interchangeable among all models except for early M91 stocks that have not been retrofitted with them.

15.  Butt plate

These are interchangeable among all models except for stamped Soviet war time and early Polish production which require recesses in the stock at the screw holes. However, there is a significant amount of variation in the shape and length of individual buttplates that may prevent them from fitting on a particular stock.

16.  Butt plate screws

These are interchangeable among all models.

17 and 18.  Magazine tang screw and receiver tang screw (action screws)

These are interchangeable among all models.

20.  Rear sight assembly (see below)

21.  Interrupter/ejector assembly (see below)

22.  Follower assembly (see below)

23.  Floorplate latch and screws

These are interchangeable among all models.

24.  Trigger/sear assembly (see below)

25.  Bolt assembly (see below)

26.  Sling, not applicable

27.  M44 bayonets

Early Soviet M44 bayonets from 1943 to late 1945 have a "single ear" lug and require the early locking ring. Late Soviet M44 bayonets from late 1945 forward and all Eastern European M44 and Chinese T53 bayonets have a "double ear" lug and require the late locking ring. The spike, screw, and spring are interchangeable.

1 and 2.  Sear/bolt stop and sear screw

These are interchangeable among all models except the Finnish M27 and Romanian M91/30 which are unique.

3 and 4.  Trigger and trigger pin

These are interchangeable among all models except the Finnish M27 and Romanian M91/30 which are unique. However, there are variations among Finnish triggers. All types except the Romanian M91/30 will work on any rifle although the M27 types requires a modified trigger guard.

5 and 6.  Floorplate latch and screw

These are interchangeable among all models.

7.  Floorplate

These are interchangeable among all models but must be used with the compatible follower carrier.

8, 9, 10, 12, 13, and 14.  Follower carrier spring, screw, pin, follower spring, pin, and follower

These are interchangeable among all models.

11.  Follower carrier

These are interchangeable among all models but must be used with the compatible floorplate.

1, 2, and 3.  Ejector/interrupter, spring, and spring screw

These are interchangeable among all models, but the two piece ejector/interrupter and spring (as pictured) must be used together.

1 thru 7.  Bolt parts

All parts are interchangeable among all models, eras, and manufacturers with the exception of the modified "winged" M27 connector bar which requires a notched receiver. A notched receiver does not require the winged connector and a standard connector may be used in its place.