Sako M591

The History of Sako

Sako (Suojeluskuntain Ase- ja Konepaja Oy) is rifle and ammunition manufacturer located in Riihimäki, Finland. It was founded in 1921, after the rifle repair workshop, opened in former Helsinki brewery, became independent of the civil guard. The workshop grew into a weapons factory, which produced hunting rifles as well as cartridges and moved its headquarters from Helsinki to Riihimäki. The first civilian rifle bearing the name Sako, was the L42, prototyped in 1942 and commercially manufactured a few years later.

After the World War II, domestic hunting culture thrived and Sako invested in development of hunting rifles. Due to this investment, domestic sales increased along with export to the USA and the rest of the world. In the 1980s, Sako merged with another firearm manufacturer, Tikkakoski and gained a valuable rifle line called Tikka. The production of military and law enforcement weapons started when Finnish defence forces ordered assault rifles and cartridges from Sako.

The company has changed multiple owners since 1921, but has ultimately been sold to Italian Beretta Holding in 2000. In 2006, Sako celebrated its 85th anniversary by launching a new hunting rifle family, Sako 85. In 2020, Sako introduced S20, the first truly hybrid rifle, designed for both; hunters and tactical shooters. Another novelty presented by Sako in 2020 was a brand new, lead-free Sako Powerhead bullet.

Sako M591 Rifle Review

The M591 was produced between 1992 and 1996 and was offered in a variety of configurations ranging from Hunter, Deluxe, Super Deluxe (both largely reflecting the quality of woodwork), Carbine, Battue and heavy-barrel Varmint versions with 61cm or 66 cm barrels. Wooden stocks in varying grades and blued barrels were a standard, as these rifles have been produced at a time before the rapid increase of stainless/ synthetic alternatives.

All M591 models have fixed magazine with hinged floorplate, allowing the user to insert five cartridges in addition to the one in the chamber. It has a tapered dovetail on top, which has a wider part in the front and the narrow part in the back. This dovetail is the same as the one on Sako 85 S.

Sako M591 Calibers

The rifle barrel twist varies according to calibre and the calibres available for the rifle are:

.22-250 Rem.
.243 Win.
7mm-08 Rem.
.308 Win.

Sako M591, chambered for .308 Win.

Figure 1: Sako M591, chambered for .308 Win. (Source: https://www.gunsinternational.com/guns-for-sale-online/rifles/sako-rifles/sako---m591-carbine---308-win.cfm?gun_id=101202350)

Scope Mounts Interchangeable With Sako M591

One thing worth pointing out when it comes to rifle mounts is that Sako has been using the same tapered dovetail mounting system for a few decades already. This means that some Sako rifles have the same mounting surface on the receiver, despite being decades apart considering their production date. With this, Sako achieved mounting system consistency, so even mounts made for today’s “Sako 85” series of rifles will fit the receivers of older Sako rifles. Rifle mounts manufacturers mainly use only present day Sako rifles (Sako 85) to designate which mount fits which receiver length. Then it’s up to the user to do the research, whether the mount will fit their rifle if they don’t have the newest rifle model.

The receiver of Sako M591, chambered for .308 Win.

Figure 2: The receiver of Sako M591, chambered for .308 Win. (Source: https://www.gunsinternational.com/guns-for-sale-online/rifles/sako-rifles/sako---m591-carbine---308-win.cfm?gun_id=101202350)

Rifles which have the same mounting surface as Sako M591:

So, if you want to buy mounts for Sako M591 or any other rifle from the list above, there is a high probability they will have Sako 85 S written in their name, because Sako 85 is currently the newest Sako model with tapered dovetail.

Best Scope Mounts for Sako M591

Fixed Scope Mounts for Sako M591

For fixed mounts on this rifle, we recommend Optilock Sako Short mounting bases. We can insert rings onto these bases, but we must be careful, because Sako Optilock rings are available only for 1inch (25.4mm), 30mm and 34mm diameter scope tubes. One special feature of the Optilock rings are the polymer inserts (except the 34mm ring, which does not include inserts), which prevent scratches on the scope. If we want to install scopes with rails or scopes with tube diameters other than these of Optilock rings, we need to reach for rings of other companies like Recknagel, EAW or Osuma, and they fit Optilock bases as well.

Sako short base

Detachable Repeatable Scope Mounts for Sako M591

The only Dentler rails available for Sako M591 rifles are Dentler BASIS, which allow only Dentler mounts to be installed on them. It is one of the most reliable and accurate quick release mounts for Sako M591 on the market. Unfortunately, Dentler BASIS bases don't support adjustments on the bases, meaning they are not as revolutionary as the Dentler BASIS VARIO.

An explanation of Dentler mounts can be seen in our Roundtable video:

If you would prefer pivot mounts, we would recommend purchasing MAKlassic two piece design mount, because they are the lowest of all pivot mounts. Pivot mounts are usually not among the lowest, but with Sako rifles, they are usually even higher than on an average rifle because of their special tapered dovetail mounting system.

Picatinny Rails for Sako M591

All of the Picatinny rails for Sako M591 are made similarly, all of them made from multiple parts.

Help Us Build Our Riflescope Mounts Database

If you have this rifle or any other rifle at home, we would really appreciate it if you could send us some photos of the rifle receiver (mounting surface of the rifle when there are no mounts installed), because it would help us expand our rifle mounts database. If you send us a photo of rifle receiver which we don’t already have, that would be of great value to us and we will definitely reward you for your help.

Please send us an email for more information. You can contact us here: info@optics-trade.eu

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