Almost every Mosin-Nagant answers three questions on one small patch of steel: who built it, when, and what has happened to it since. The factory logo and the year are stamped together on the barrel shank, just ahead of the receiver. A five-pointed star with an arrow inside it is Tula. An arrow inside a triangle is Izhevsk. The four digits next to that mark are the year of manufacture. Everything else on the rifle is commentary.
The one place to look first
The barrel shank carries the identity of the rifle. It is the short exposed ring of barrel between the receiver and the rear sight base, and on Soviet-era rifles it holds the factory logo, the four-digit year, and the serial number in a tight cluster. Look down at it from above and you have the maker and the date before you have opened the bolt.
Older rifles spread their marks around more. Imperial-period Tula rifles carry a hammer on the receiver, Sestroretsk stamped its arrow on small parts such as the trigger and cocking knob, and pre-1928 Izhevsk rifles used a bow-and-arrow device on the shank instead of the later triangle.
The arsenal marks, read at a glance
| Mark | Arsenal | Period | Where to look |
|---|---|---|---|
| Arrow inside a five-pointed star | Tula | Post-1928 Soviet | Barrel shank |
| Hammer | Tula | Pre-1928 Imperial and early Soviet | Receiver |
| Hammer in a circle, or a plain star | Tula | Varies | Bolt body |
| Arrow inside a triangle | Izhevsk | Post-1928 Soviet | Barrel shank |
| Bow and arrow | Izhevsk | Pre-1928 | Barrel shank |
| Arrow | Sestroretsk | 1893–1918 | Trigger, cocking knob |
| Imperial double-headed eagle crest | Any Imperial factory | Pre-1917 | Barrel shank, above the date |
1928 is the hinge year. Both surviving arsenals adopted their geometric logos around then, so an arrow-in-triangle or arrow-in-star means a Soviet rifle, while a crest or a hammer means an older one. Sestroretsk closed in 1918 and never used a Soviet logo at all.
Reading the date
The four digits beside the factory logo are the year of manufacture, not the year the rifle reached its final configuration. That distinction matters more on Mosins than on almost any other service rifle, because the Soviets kept rebuilding them for sixty years.
Three common cases where the stamped date is not the whole story:
- A pre-1930 date on a 91/30. The M91/30 was adopted in 1930, so a 91/30 wearing an earlier year is a converted M91 or Dragoon receiver. Collectors call these ex-Dragoons, and they are normal rather than suspect. The giveaway is a gap left by the different rear-sight dovetail.
- A second, later date on the barrel. On Finnish rebuilds this is expected, not a fault. More on that below.
- An added “1891/59” on the receiver. These are 91/30 rifles cut down to carbine length around 1959, with the rear sight graduations partly ground off. The original factory logo and year stay put and the 91/59 mark is added alongside. Whether the work was Soviet or Bulgarian is still argued.
Hex versus round: a dating tool, not a grade
The shape of the receiver narrows the year before you read a single digit. Early Mosins have a flat-sided, octagonal receiver that collectors call a hex. Later ones are cylindrical.
Izhevsk submitted round receivers for trials in November 1933 and started serial production in 1935, switching almost completely to the round pattern that year. Tula started round production in 1936 and finished the changeover within the year. No hex receivers are known to have been produced after 1936.
That gives you a clean rule: a hex receiver means 1936 or earlier. It does not, on its own, mean rare. Both arsenals made hex receivers for four decades and there are a great many of them. What makes a hex rifle interesting is an early receiver paired with an honest, un-reworked rest of the gun.
One further wrinkle on wartime rifles: Izhevsk introduced the taller high-wall receiver during the simplifications of autumn 1941, and the low-wall pattern only returned to mass production in early 1946.
Soviet arsenal refurbishment marks
Most Mosins on the American market passed through a Soviet depot at some point, and those depots left signatures. The commonest is a small boxed mark on the barrel shank, often described as looking like an “n” in a square. It is the standard refurbishment stamp seen on 91/30 rifles and M44 carbines. Other depot marks identify specific facilities, such as Arsenal #7 at Riga, Arsenal #1 at Balakleya, and a triangle-25 used by the Central Artillery Armament Base at Omsk. A bisected diamond with a year is a Ukrainian refurbishment mark.
The stamp is rarely the only evidence. A refurbished rifle usually also shows:
- Electro-pencilled serial numbers on the bolt or other numbered parts, in place of stamped ones
- Old numbers lined out or ground off with new ones stamped beside them
- A glossy or semi-gloss shellac finish on the wood
- A laminated replacement stock
None of this is damage. A refurb was repaired and re-issued by the army that owned it, which is part of its history. It does mean the rifle is a rebuild rather than an untouched example, and that belongs in the listing rather than being left for the buyer to find.
Import marks
Any Mosin brought into the United States commercially since 1968 carries an importer’s mark. Federal regulation requires a licensed importer to place its name and city and State, or its name and abbreviated licence number, plus the country of manufacture, on the firearm. On surplus Mosins that legend is usually rolled along the barrel, sometimes on the receiver.
An import mark is not a defect and not a sign of a reproduction. Purists dislike the extra billboard, and heavily stamped examples sell for a little less, but the mark is also clean evidence of how the rifle legally entered the country.
Finnish capture marks, briefly
A boxed SA on the barrel, stock, or receiver means the rifle served in the Finnish Army. SA stands for Suomen Armeija, and it is a property mark rather than a maker’s mark. Finnish rifles routinely show a Russian receiver date and a much later Finnish barrel date, because Finland rebuilt captured receivers into rifles of its own design. Two dates decades apart is the design, not a mismatch. Our Finnish Mosin-Nagant guide covers the SAKO, VKT, and Tikkakoski marks and the M39, M28/30, and M91 variants in detail.
Matching numbers: which parts actually carry one
Four components on a standard Mosin are numbered, and the barrel shank number is the reference the others are measured against:
- Barrel shank — the rifle’s number
- Bolt
- Magazine floorplate
- Buttplate
A rifle where all four agree and all four are stamped rather than electro-pencilled is matching. Where a number was restamped to agree with the barrel the rifle is force-matched, and you can usually see it: a lined-out number, a ground-off patch, an electro-pencilled figure, or a number missing an alpha prefix the others carry.
Common misidentifications
- Two different dates read as a fake. On a Finnish rebuild, the receiver date and the barrel date are supposed to differ. Check for the boxed SA before concluding anything.
- Mistaking the Izhevsk triangle for the Tula star. Both marks have an arrow in them. The outline around the arrow is the answer: triangle for Izhevsk, five-pointed star for Tula.
- Treating a hex receiver as automatically rare. Hex means 1936 or earlier. It does not mean scarce.
- Calling a pre-1930 91/30 a fake. It is an ex-Dragoon conversion, and it is the normal explanation for that date.
- Confusing a 91/59 with an M38 or M44. The 91/59 is a cut-down 91/30 and looks close to an M38, but it carries the added 1891/59 marking and the tell-tale partly ground-off rear sight graduations.
- Reading a refurb stamp as a factory proof. The boxed mark on the shank is depot work.
- Assuming an import mark devalues the rifle to nothing. It is a legal requirement, not a flaw.
On the floor at OSA
Every Mosin-Nagant we sell is a single rifle photographed as it actually is, with the arsenal mark, the date, and the numbered parts shown close up so you can read them before you buy. Two hex-receiver examples on the shelf right now make good reference pieces for everything above: a 1932 Tula hex 91/30, non-refurbished, which shows the arrow-in-star with no depot stamps on it, and a 1927 Izhevsk hex 91/30 with matching numbers and an original sling, which is an ex-Dragoon by date and wears the arrow-in-triangle.
The rest of the shelf is on the Mosin-Nagant page. If you are hunting a specific arsenal, year, or receiver shape, tell us and we will say plainly what is in the case.
General information for collectors, not legal or investment advice. Markings and dating practice vary between arsenals and periods; verify details on the individual firearm.
Common Questions
How do I tell a Tula Mosin from an Izhevsk Mosin?
Look at the barrel shank, the short exposed ring of barrel just forward of the receiver, and find the small stamped logo next to the four-digit year. Both Soviet arsenals used an arrow, so the arrow itself tells you nothing. What distinguishes them is the shape drawn around it. Tula enclosed its arrow in a five-pointed star; Izhevsk enclosed its arrow in a triangle. Both adopted these logos around 1928. If the rifle is older than that you will see different devices instead: a hammer for Tula, usually on the receiver, and a bow-and-arrow for Izhevsk on the shank. Sestroretsk, the third Imperial arsenal, closed in 1918 and marked small parts such as the trigger and cocking knob with a plain arrow rather than stamping a factory logo on the shank. Imperial rifles from any of the three often carry a double-headed eagle crest above the date instead of a factory device, which by itself dates the rifle before 1917.What year did Mosin hex receivers stop?
1936 is the answer for practical purposes. Izhevsk designed the round receiver first, submitted it for trials in November 1933, and began serial production in 1935, switching almost entirely to the round pattern that year. Only a handful of 1936-dated Izhevsk hex receivers are known. Tula began round production in 1936, the year the drawings were formally adopted, and completed its changeover within that same year. No hex receivers are known to have been produced anywhere after 1936. So a hex receiver dates the action to 1936 or earlier with real confidence. Be careful about the reverse inference, though: a Finnish rifle built on a captured hex receiver shows an early Russian date on a rifle assembled decades later, so receiver shape tells you nothing about when the finished rifle entered service. Nor does hex automatically mean valuable, since both arsenals produced them in enormous numbers for forty years.Does a Mosin need matching numbers to be worth buying?
No, and insisting on it will price you out of most of the surviving pool. Four parts carry the number on a standard Mosin: the barrel shank, which is the rifle’s own number, plus the bolt, the magazine floorplate, and the buttplate. A fully matching, stamped-not-etched example commands a premium, because most Soviet rifles went through depot rebuilds that scrambled parts. A force-matched rifle, where numbers were restamped or electro-pencilled at a depot to agree, is honest history and shoots exactly as well. What matters is that a seller tells you which it is, and that the evidence is visible. Force-matching usually shows as a lined-out original number, a ground-off patch, or an electro-pencilled figure alongside stamped ones. We state matching status on every Mosin we list and photograph the numbers so you can check the work yourself rather than taking our word for it.What does the square stamp on my Mosin barrel mean?
It is almost certainly an arsenal refurbishment mark. The commonest version is a small boxed device on the barrel shank that collectors describe as an “n” in a square, and it appears on a very large share of 91/30 rifles and M44 carbines that went through Soviet depot rework. Other boxed or geometric marks identify particular facilities, including Arsenal #7 at Riga, Arsenal #1 at Balakleya, and a triangle-25 used at Omsk. A bisected diamond followed by a two-digit year is Ukrainian refurbishment work. Look for corroborating evidence before you conclude anything: electro-pencilled numbers on the bolt, old numbers lined out, glossy shellac on the wood, or a laminated replacement stock. Any two of those alongside the boxed mark make the case. A refurbished rifle is a rebuilt rifle, not a damaged one, and for a shooter it is very often the better buy.Is a Mosin with an import mark worth less?
Slightly, and only to collectors who prize an unmarked barrel. Federal regulation has required licensed importers since 1968 to mark imported firearms with the importer’s name and city and State, or name and abbreviated licence number, along with the country of manufacture. On a Mosin that legend is usually rolled along the barrel. A deep, coarse, badly placed stamp does hurt value more than a small tidy one, so the execution matters more than the fact. Everything else being equal, an unmarked pre-1968 bring-back sells for more than the same rifle wearing a 1990s importer’s name. But the mark also documents a clean legal path into the country, which is not nothing, and on a refurbished shooter-grade Mosin it changes very little. We photograph import marks rather than shooting around them, so you can judge the stamp before you buy.Sources
- 7.62x54r.net — Russian and Soviet Mosin Nagant Marks (arsenal mark catalogue: Tula arrow-in-star and pre-1928 hammer, Izhevsk arrow-in-triangle and pre-1928 bow-and-arrow, Sestroryetsk arrow, refurbishment marks, and where each is stamped). Mirror: http://thinlineweapons.com/7.62x54r/7.62x54r.net/MosinID/MosinMarks.html
- m9130.info — Model 1891/30 rifle receiver (round receiver trials November 1933, Izhevsk serial production from 1935, Tula changeover in 1936, no hex receivers after 1936, high-wall from autumn 1941 and low-wall returning in early 1946): https://www.m9130.info/receiver
- Mosin Museum — Complete Guide to Mosin Markings (the boxed refurbishment mark on 91/30s and M44s, Arsenal #7 Riga, Arsenal #1 Balakleya, triangle-25 Omsk, factory logo adoption after 1928): https://www.mosinmuseum.com/all-markings
- Relics & Rifles — Mosin-Nagant Identification & Dating (depot rework indicators, force-matching, the four numbered components, import mark placement): https://www.relicsandrifles.com/reference/mosin-nagant.html
- American Rifleman (NRA) — Rifleman Q&A: What’s the M91/59 Mosin-Nagant? (91/30 rifles shortened circa 1959, added 1891/59 receiver marking, ground rear sight graduations): https://www.americanrifleman.org/content/rifleman-q-a-what-s-the-m91-59-mosin-nagant/
- eCFR, 27 CFR 478.92 — identification of firearms by licensed importers: https://www.ecfr.gov/current/title-27/chapter-II/subchapter-B/part-478/subpart-F/section-478.92
- Old Steel Arsenal — Finnish Mosin-Nagant guide (boxed SA mark, SAKO / VKT / Tikkakoski, two-date Finnish rebuilds)