The Sako S20 is a

bolt-action Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-action ...

rifle A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...

designed and manufactured by Finnish firearms company Sako since 2020. The rifle features an aluminium chassis, which allows for modularity and different configurations, due to which Sako calls it a ''hybrid rifle''.

History

Sako introduced the S20 rifle in 20 February 2020. At the date of its introduction, it is offered in two different main configurations, ''Hunter'' and ''Precision''.

Design

The S20 rifle features a steel receiver, which has two scope bases machined directly into it. The bottom of the receiver is milled to a V-shape for bedding into an aircraft-grade aluminium

chassis A chassis (, ; plural ''chassis'' from French châssis ) is the load-bearing framework of an artificial object, which structurally supports the object in its construction and function. An example of a chassis is a vehicle frame, the underpart ...

for its whole length. The receiver and chassis are attached with three action

screw A screw and a bolt (see '' Differentiation between bolt and screw'' below) are similar types of fastener typically made of metal and characterized by a helical ridge, called a ''male thread'' (external thread). Screws and bolts are used to fa ...

s. The S20 rifle is built on the TRG platform.https://www.sako.global/series/sako-s20 The cylindrical bolt features three locking lugs and is manufactured from

stainless steel Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon, other nonmetals and metals to obtain other desired properties. Stainless steel's corros ...

, and its handle is replaceable. The bolt throw is 60 degrees. The

barrel A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, ...

is cold hammerforged and is available in two different contours ( fluted light, or smooth semi-heavy) and comes in lengths of . The muzzle threading is -24 UNEF (3A tolerance class). The

stock In finance, stock (also capital stock) consists of all the shares by which ownership of a corporation or company is divided.Longman Business English Dictionary: "stock - ''especially AmE'' one of the shares into which ownership of a company ...

, outside of the chassis, is made from high impact-resistant

fiber-reinforced polymer Fibre-reinforced plastic (FRP; also called fibre-reinforced polymer, or in American English ''fiber'') is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually glass (in fibreglass), carbon (in carbon-fibr ...

. Both the front and rear parts of the stock are interchangeable and allow the difficult use as a

takedown rifle A takedown gun (typically a takedown rifle or takedown shotgun) is a long gun designed to be taken apart significantly reducing its length, making it easier to store, pack, transport and conceal. A variety of barrel, stock, and receiver de ...

; the hunter variant has a thumbhole grip, while the precision variant has a vertical grip. The stocks feature QD sling mounts, and the precision stock fore-end also features

M-LOK M-LOK, for Modular Lock, is a firearm rail interface system developed and patented by Magpul Industries. The license is free-of-charge, but subject to an approval process. M-LOK allows for direct accessory attachment onto the "negative s ...

accessory attachment points. The

length of pull Length of pull (sometimes abbreviated as LOP) is the distance from the trigger to the part of a rifle or shotgun which fits against the shoulder of the shooter. Length of pull is an important ergonomic factor for ease of use; and optimum length of ...

is adjustable with spacers and the stocks feature adjustable cheek risers with a visible dial number. The

trigger group A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun. The word may also be used to describe a switch that initiates the operation of other non-shooting devices such as a trap, a ...

is installed in an aluminium frame and has an adjustable pull weight of , and the trigger position can be adjusted front/back by . Both single-stage and two-stage triggers are available. The

safety Safety is the state of being "safe", the condition of being protected from harm or other danger. Safety can also refer to risk management, the control of recognized hazards in order to achieve an acceptable level of risk. Meanings There are ...

blocks the firing pin when the it is engaged. The

magazine A magazine is a periodical publication, generally published on a regular schedule (often weekly or monthly), containing a variety of content. They are generally financed by advertising, purchase price, prepaid subscriptions, or by a combinatio ...

s are detachable double-stack/single-feed magazines, and they are available in two different capacity: 5- or 10-round for standard short-action cartridges ( .243 Winchester, 6.5 Creedmoor and

.308 Winchester The .308 Winchester is a smokeless powder rimless bottlenecked rifle cartridge widely used for hunting, target shooting, police, military, and personal protection applications globally. It is similar but not identical to the 7.62×51mm NATO ...

) and 3- or 7-round for long-action/

magnum cartridge A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile (bullet) caliber and case shoulder shape. The term derives from the .357 Magnum, the original cartridge with this ...

s ( 6.5 PRC,

.270 Winchester The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54The Complete Reloading Manual for the .270 Winchester, Loadbooks USA, Inc., 2004 ...

7mm Remington Magnum The 7mm Remington Magnum rifle cartridge was introduced as a commercially available round in 1962, along with the new Remington Model 700 bolt-action rifle. It is a member of the belted magnum family that is directly derived from the venerable . ...

.30-06 Springfield The .30-06 Springfield cartridge (pronounced "thirty- aught-six" ), 7.62×63mm in metric notation, and called the .30 Gov't '06 by Winchester, was introduced to the United States Army in 1906 and later standardized; it remained in military use ...

and

.300 Winchester Magnum The .300 Winchester Magnum (also known as .300 Win Mag or .300 WM) (7.62×67mmB, 7.62x66BR) is a belted, bottlenecked magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a m ...

). The magazines also allow for longer-than-standard overall length for the ammunition. The rifles can also be fitted with a wide array of accessories, including muzzle brakes, a thumb rest, barricade stop and such. Sako also manufactures a specific

scope mount Scope mounts are used to attach telescopic sights or other types of sights to firearms. The scope sight itself is usually made for only one of two main types of mounts, which can be classified as ''scopes for ring mounts'' (for example a 30 ...

for , 30 mm, 34 mm and 36 mm scopes, with three different saddle height options, or standard

Picatinny The Picatinny Arsenal ( or ) is an American military research and manufacturing facility located on of land in Jefferson and Rockaway Township in Morris County, New Jersey, United States, encompassing Picatinny Lake and Lake Denmark. The Arse ...

rings may be used. Sako guarantees a sub 0.3

mrad The Barrett MRAD (Multi-role Adaptive Design) is a bolt-action sniper rifle designed by Barrett to meet the requirements of the SOCOM PSR. The MRAD is based on the Barrett 98B and includes a number of modifications and improvements. The Barrett ...

(1 MOA)

accuracy Accuracy and precision are two measures of ''observational error''. ''Accuracy'' is how close a given set of measurements (observations or readings) are to their ''true value'', while ''precision'' is how close the measurements are to each other ...

for the rifle when using Sako factory ammunition.

References

{{reflist

External links

Official Sako product website
Bolt-action rifles of Finland Sniper rifles of Finland Hunting rifles 7.62×51mm NATO rifles .30-06 Springfield rifles Weapons and ammunition introduced in 2020

History

Design

See also

References

External links