Sako 90 M Optilock

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Repeatable Mounts

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. In 2023, the company launched a new bolt-action hunting rifle, the Sako 90, and later in the fourth quarter of the same year, they introduced the model 100.

Sako 90 M Rifle (Optilock) Review

Sako 90 is a new model of a bolt action hunting rifle introduced by Sako company in 2023. The 90-model is inspired and evolved from their Sako 85 rifle and comes in various stock configurations, either in wooden Bavarian stock, a laminate stock or even a carbon fiber synthetic stock.

Sako 90 rifles are available in five action lengths - XS, S, SM, M, and L - to correspond with different caliber groups. This range in action sizes aims to minimize weight and align with cartridge lengths, reducing unnecessary bolt travel. Another advantage of varying receiver lengths is the improved structural rigidity of the receiver. Moreover, Sako plans to introduce additional calibers for 90 series in 2024.

The mounting surface of the Sako 90 is available as the integrated Picatinny rail or the designated Optilock system. Strangely enough, that is the name they decided to use for the updated mounting surface, even though the term Optilock was long reserved for their mounting systems. This landing page refers to the latter models in M receiver length. If you are looking for scope mounts that fit the Picatinny version of your Sako 90 rifle, you may find them here: LINK DO PIKATINNIIII link link link

The action and the cold-forged barrel are made from high-quality blued steel, although stainless-steel barrels are also available. Sako 90 features precision-cut checkered panels on the fore-end and pistol grip, and an elevated comb for optimal scope-to-eye alignment. Mechanically, the action is also derived from the 75 and 85 models and houses a bolt with three locking lugs that lock up safely with the housing of the action. The magazine of the rifle which is attached to the well via a two-point release system, is also made of stainless steel and can hold up to five rounds. The release button is located at the front end of the magazine and must be pulled rearwards to drop it. The trigger blade of the rifle is adjustable for length of pull through a small Allen screw, allowing for a precise trigger release. Sako has come a long way in improving the trigger design. The mechanism now includes a five-position rotary adjuster which enables sear weight adjustment ranging from 794 g (1.75 lbs) to 1842 g (4.1 lbs).

The safety on the 90 model is operated from the lever which can be found on the right side of the bolt shroud. Pulling the lever backwards locks the bolt handle and trigger. To safely remove a round from the chamber, the little button in front of the safety lever must be pressed to release the bolt. The safety remains engaged, and the trigger is blocked while the bolt can be opened and closed. By pushing the lever in the forward position, the safety is disengaged, and the rifle can be fired. The barrels on some models are equipped with preinstalled iron sights and the stocks have a rubber recoil pad at the rear end.

The Sako 90 versions using Optilock solution have transitioned from the traditional Sako mounting surface that had a unique tapered shape to a Tikka T3-style 17 mm dovetail mounting system, meaning that some of the dovetail-suitable scope mounts will now fit on the receivers of both rifles as they have the recoil notches similarly positioned. Note that the Sako 90 has no holes on top of the receiver, thus only mounts with side clamps suitable for dovetail installation will be interchangeable with the Tikka T3-style surface.

Sako 90 M, chambered for .270 Win.

Figure 1: Sako 90 M, chambered for .270 Win. (Source: https://www.berettaaustralia.com.au/sako-90-hunter-stainless/)

Sako 90 M Calibers

The rifle can be chambered for the following calibers:

6.5x55 SE
.270 Win.
.30-06 Spr.
8x57 JS
9.3x62

Sako 90 M Variants

The rifle is available in the following variants:

Sako 90 Peak
Sako 90 Quest
Sako 90 Quest Ultra
Sako 90 Hunter
Sako 90 Bavarian
Sako 90 Adventure
Sako 90 Varmint

The receivers of the Sako 90 (Optilock) rifle come equipped with a special 16.5 mm dovetail that features two recoil notches, one on the front and one on the rear mounting surface.

The receiver of Sako 90 M, chambered for .30-06 Spr.

Figure 2: The receiver of Sako 90 M, chambered for .30-06 Spr. (Source: https://berettagalleryusa.com/pages/sako-90/30-06-hunter)

Sako 90 M (Optilock)

Scope Mounts Interchangeable With Sako 90 M (Optilock)

Rifles That Have One-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

For one-piece mounts to fit on a rifle, mounting surfaces on these rifles must match in every dimension. Rifles that share one-piece scope mounts with Sako 90 (Optilock) are:

Tikka T3
Tikka T3x
Tikka M55
Tikka M65
Tikka M590
Tikka M690
Tikka M595
Tikka M695
Sako TRG 21/41
Sako TRG 22/42
Sako 90 L Optilock
Sako 90 SM Optilock
Sako 90 S Optilock
Sako 90 XS Optilock
Lynx 94 SA
Lynx 94 MA
Lynx 94 LA
Lynx Light Hunter MA
Lynx Light Hunter LA
Lynx TD12 MA
Lynx TD12 LA
Lynx TD15 MA
Lynx TD15 LA
Lynx TD21 MA
Lynx TD21 LA

Rifles That Have Two-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

To meet interchangeability conditions, two-piece mounts must match in all dimensions except the B distance. B distance can vary because two-piece mounts can be installed and adjusted closer or further apart. Rifles that share two-piece scope mounts with Sako 90 (Optilock) are:

Tikka T3
Tikka T3x
Tikka M55
Tikka M65
Tikka M590
Tikka M690
Tikka M595
Tikka M695
Sako TRG 21/41
Sako TRG 22/42
Sako 90 L Optilock
Sako 90 SM Optilock
Sako 90 S Optilock
Sako 90 XS Optilock
Lynx 94 SA
Lynx 94 MA
Lynx 94 LA
Lynx Light Hunter MA
Lynx Light Hunter LA
Lynx TD12 MA
Lynx TD12 LA
Lynx TD15 MA
Lynx TD15 LA
Lynx TD21 MA
Lynx TD21 LA

Please note that the Sako 90 has no holes on top of the receiver; thus, this list is only applicable to the mounts with side clamps suitable for dovetail installation.

Best Scope Mounts for Sako 90 M (Optilock)

Detachable Repeatable Scope Mounts for Sako 90 M (Optilock)

This INNOMOUNT pivot mount, while primarily designed for the Tikka T3, also fits the Sako 90 using the Optilock system. This compatibility is due to the similar positioning of the front recoil notches on both rifles. It offers a secure and reliable mounting solution for both rifle models.

Help Us Build Our Riflescope Mounts Database

If you happen to own this or any other rifle, we would appreciate it if you could help us expand our database by sending us some photos of the rifle receiver (the bare mounting surface of the rifle without the scope mounts installed). For your help, our company offers a fair return in terms of practical rewards.

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

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VIDEO

There are two terms found for similar thing: quick release scope mounts and quick detach scope mounts. Term quick release scope mounts is used mostly in Europe and quick detach scope mounts is used mainly in USA, although they mean the same thing. With these terms we describe a scope mount that can be quickly removed from the rifle in the field without using any tools and quickly attached back on the rifle when needed.

Main advantages:

possibility to use multiple scopes on the rifle,
easy transportation of the scope and the rifle separately,
if scope fails, it is possible to immediately detach it and use iron sights.

FIXED vs DETACHABLE scope mounts

Fixed scope mounts are mounted to the rifle with screws and sometimes even with glue. This means that it is impossible to attach or detach the scope mount using bare hands without using tools. It also means that they are not meant for constantly being attached on or detached off the rifle. Once you screw the mount on the rifle, it normally stays there for a longer period of use.

Detachable scope mounts offer possibility to attach or detach them without using any tools. This is extremely handy while transporting the rifle and the scope separately and it also offers multiple solutions of different optics on the same rifle. Detachable scope mounts can be attached or detached from the rifle in a matter of seconds, using bare hands.

Fixed Mount

Fixed Mount

DETACHABLE vs REPEATABLE scope mounts

It is important to know and understand expressions “detachable” and “repeatable” while talking about scope mounts. Term detachable scope mounts implies scope mounts that can be quickly attached or detached without using any tools. However, when you detach this kind of mount and attach it back on the rifle, it is recommended to zero the rifle before using it again. Procedure of detaching and again attaching the mount will probably need a sighting in before next shooting, because mount will not be secured on the rifle in the perfectly same position and conditions as it was before detaching it off the rifle.

On the contrary, repeatable scope mounts are most sophisticated mounts. These scope mounts are also detachable, however – they provide removing scope from the rifle and attaching it back again without zeroing the rifle every time. This means that they are made more precisely and that they are offering a possibility of using different optical sights / scope on the same rifle. These mounts are ideal for hunters who can use optical and iron sights interchangeably, depending on the needs in different situations. With the repeatable scope mounts, it is useful to keep them oiled as well as the upper part of the rifle, so that repeatability is more ensured. With a touch of oil, the repeatability might be better, because parts of the mount will always return to their previous locations.

Different types of repeatable scope mounts:

Pivot mounts,
Dentler mounts,
Picatinny repeatable mounts,
12 mm dovetail repeatable mounts (for break barrel rifles, such as Steyr Duett, Blaser B750, Fair Combi, Fair SLX 800, Bettinsoli rifles, etc.),
Original repeatable mounts, made by manufacturers of rifles for their rifles (Blaser mount, Sauer SUM mount, Mauser M03 mount, Steyr Monoblock mount, etc.).

Repeatable Mount

Repeatable Mount

TIP OFF / ROLL OFF vs SLIDE ON mounts

Nowadays, there are a whole lot of different possibilities, made for attaching riflescopes on the rifles. There are also a lot of different expressions, having the same meaning. It is good to know that tip off and roll off mounts are basically the same thing. They represent quick release scope mounts for dovetails and rails which can be rolled or tipped off the rail vertically to the side of the rail. On the contrary, there are also slide on mounts available on the market. They represent quick release scope mounts that can be slided on or off the rail or dovetail from front or rear side of the rail / dovetail. All of these expressions are mainly used for separate rings that can be attached to the rails / dovetails. As far as functioning the rifle, it does not matter which one of these mounts you choose – tip / roll off or slide on mounts. If they are installed correctly, they are all going to work. However, the main difference between them is the principle of attaching them on rails on dovetails.

Slide On Mount vs. Roll Off Mount

Slide On Mount vs. Roll Off Mount

Sako 90 M Optilock

Sub Categories

The History of Sako

Sako 90 M Rifle (Optilock) Review

Sako 90 M Calibers

Sako 90 M Variants

Scope Mounts Interchangeable With Sako 90 M (Optilock)

Rifles That Have One-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

Rifles That Have Two-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

Best Scope Mounts for Sako 90 M (Optilock)

Detachable Repeatable Scope Mounts for Sako 90 M (Optilock)

Help Us Build Our Riflescope Mounts Database

INNOmount QD Mount for Tikka T3, 30 mm

MAKuick One-piece Mount, Tikka T3, 30mm

Rusan Roll-off Rings, Tikka T3, 30 mm, Q-R

Rusan Roll-off Rings, 16.5 mm rail, 30 mm, Q-R

Rusan Roll-off rings with extension, 16.5 mm rail, 30 mm, Q-R

INNOmount for Tikka T3, Yukon Photon

Recknagel Tip-Off Rings with Windage for 16.5 mm Dovetail, 30 mm

EAW Roll-off Mount for Tikka 558, 658, 30 mm

EAW Roll-off Mount for Tikka M 595, 30 mm

Warne Maxima Vertical-Split QD Rings for Tikka, 30 mm

Osuma QD 30 mm Rings, Tikka 17 mm Rail

INNOmount ZERO Mount for Tikka T3, 30 mm

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FIXED vs DETACHABLE scope mounts

DETACHABLE vs REPEATABLE scope mounts

TIP OFF / ROLL OFF vs SLIDE ON mounts

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Sako 90 M Optilock

Sub Categories

The History of Sako

Sako 90 M Rifle (Optilock) Review

Sako 90 M Calibers

Sako 90 M Variants

Scope Mounts Interchangeable With Sako 90 M (Optilock)

Rifles That Have One-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

Rifles That Have Two-Piece Scope Mounts Interchangeable With Sako 90 M (Optilock)

Best Scope Mounts for Sako 90 M (Optilock)

Detachable Repeatable Scope Mounts for Sako 90 M (Optilock)

Help Us Build Our Riflescope Mounts Database

VIDEO

FIXED vs DETACHABLE scope mounts

DETACHABLE vs REPEATABLE scope mounts

TIP OFF / ROLL OFF vs SLIDE ON mounts

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