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Pattern 1950 rifle
Pattern 1922 rifle, using the same operating mechanism
Type	Automatic rifle
Place of origin	Itayana Sante Reze (technical assistance)
Service history
In service	Itayana Solar Autocracy (1950 - 2005) Amayana Makgato Federation (c.1960 - 2013)
Used by	Amayana National Army Makgato Defence Force Thundering Elephant Army Agysimba Liberation Army
Wars	Kasai War Ninvite War M'Biruna Civil War Central Karana War
Production history
Designed	c.1948-1950
Manufacturer	Various arsenals
Produced	1950-present
No. built	approx. 5,500,000 (all models)
Variants	Various configurations
Specifications
Weight	7.0kg
Length	1300 mm
Cartridge	7.92x57 mm
Action	Gas-operated, roller-locked bolt
Rate of fire	240 rpm (automatic mode)
Muzzle velocity	Approx. 900 m/s
Effective firing range	500m (with iron sights)
Maximum firing range	2000m (with telescopic sights)
Feed system	65-round drum magazine
Sights	iron sights(standard) telescopic sights(later and marksman models)

The Pattern 1950 Rifle is an automatic rifle designed in the Lower Karana governorates of Itayana. Based on the early Pattern 1922 Rifle, it used the same operating mechanism, adapted to make the rifle fully automatic. Despite the initial production difficulties, the rifle quickly supplanted most of the older rifles across Itayana, becoming one of the iconic symbols of the Karanite involvement in the Ninvite War.

Development

The direct predecessor of the Pattern 1950 is the Pattern 1922 Rifle, first acquired via Sante Reze in 1921. By that time it was by far the most advanced weapon of the governors in the Two Basins. The weapon was known to be distributed to the elite units of 6th, 8th, 5th, 7th, 16th, 18th, and 19th Governorates. Those units from the former two polities were directed to the frontlines of the Agala War when Charnean Army entered the Itayana region. The rifle performed well in prepared both in ambushes in highlands and in the open battles, slowing down the foray of ICA mechanized vanguards to the point when their command chose to withdraw and focus on the Zarma rebellion within the Agala. The aftermath of the war, described as a "rude awakening to their [governorates] weaknesses", forced the governorates all across the Two Basins to place efforts in militarization, industrialization and modernization, beginning the Unifying Revival. Within the 6th Governorate said effort included the development of new series of weapons, including a battle rifle.

Most of the information about the development of the Pattern 1950 Rifle comes from scattered excerpts of various memoirs, a few archived papers in the Yanbango Central Library, and several prototypes found in the SMT Arsenal Museum. It is known that around 1947-1948, a team of twelve mechanics and gunsmiths from the SMT Arsenal was approached by their governor to create a series of weapons to standardize equipment of the armies of the right bank of Lower Karana. Part of that series was a selective-fire battle rifle to be the unified weapon of all ground troops. Although more or less experienced in maintenance of various pieces of equipment, developing a new rifle proved to be a challenge for the SMT team. The designers adopted the Pattern 1922 system of buffered gas operation, but initially could neither meet the requirement for selective fire, nor make it fit for mass production. With the assistance of a Rezese weapons manufacturer, SRZ, the issues were solved by 1950 and the rifle was adopted immediately.

Initial production orders went to the SRZ while the SMT Arsenal was revamping its industrial machinery. First locally-produced rifles entered service in 1953. Further production orders were also placed to the Kanokari Arsenal of the 5th Governoate and the LDN arsenal of the 18th Governorate, allowing the design to spread across the Lower Karana and Imo. 29th Governorate captured several rifles in the Kasai War and adopted the design as well by 1960, when the production lines were properly set up.

Operation

Pattern 1950 rifle is a gas-operated selective-fire rifle. At 1,300 millimetres (51 in) long and weighing 7.0 kilograms (15.4 lb), it is one of the larger and heavier battle rifles put into service. Unlike Pattern 1922, it features a straight stock and a wooden handguard assembly, reminiscing of older bolt-action rifles like the Olesunn and the BR-1 rifles. Pattern 1950 rifle is fitted with a muzzle break and a standard-issued detachable bipod for extra stability during the sustained fire. The bipod is mounted at the forward third of the rifle and extends downwards, allowing a somewhat wider field of fire than the forward-mounted bipod. The rifle could also be outfitted with a bayonet, fit to the lock behind the muzzle break.

The rifle's rear sights were borrowed from the Olesunn rifle. It is a tangent leaf sight, calibrated from 144 to 1296 meters, in line with Itayana base-12 measurements. The effective firing range was 500 metres (1,600 ft) for the average rifleman. Further production models added places for optical scopes like PU or PSO-1, but few scopes were available for the rifles until 1980s. Those that could be acquired ended up mostly issued to sharpshooters in reconnaissance units or the best riflemen in battalions. With optical scopes, the effective range of semi-automatic fire could be as far as 2,000 metres (6,600 ft). While no precise data exists for the effective range of automatic fire with optical scopes, three after-action reports from the Thundering Elephant Army troops suggest possible accurate automatic fire up to about 900 metres (3,000 ft) in right situations.

The operating scheme was borrowed from the Pattern 1922 Rifle. The gas piston is detached from the bolt by a mechanical lock, which consists of a metal plunger, a lock itself, and a locking coil. The plunger is connected to the operating rod through an intermediate coil, while a weaker intermediate coil counteracts it on the other side of the assembly. When the expanding gas reaches the gas port, the gas piston moves the plunger back until it hits the lock coil, sealing the plunger in the lock, which forces the excess gas pressure outside of the barrel. The intermediate coil pushes the operating rod back, fully unlocking the bolt and extracting the cartridge; losing its tension, it also disables the gas piston lock. The assembly then slides back under pressure from the second intermediate coil, pushing the gas piston and the plunger forward and sealing the bolt.

Three changes were made to the operating system from the onset of development. First, the operating rod was placed at the centerline of the assembly, as opposed to the right side of the rifle. Second, the operating rod could no longer be disengaged from the bolt, disabling the manual straight-pull action of the Pattern 1922. Third, positions of the operating mechanism and the barrel were reversed, leaving the gas operation to the top. Those changes, with the addition of the straight stock, allowed the already buffered recoil impulse to be transmitted to the shooter by a straight line, further mitigating the effects of recoil on accuracy during the automatic fire.

The fire selector, a rotating lever also serving as a safety catch, is integrated into the trigger assembly. Its forward position corresponds to automatic fire, the downward position is semi-automatic fire, and the rearward position disengages the trigger as a safety measure. The rifle is fed through a drum magazine; the first prototype was fed by a 65-round magazine from the Pattern 1922 rifle. During the Agala War, it was found to be too prone to ejecting unspent cartridges even by the better-trained lifeguard troops, so a new 65-round magazine was developed. Both were based on the same operating principle, using a spring-driven dummy cartridge to bring the next round up to be fed.

The theoretical rate of automatic fire is 240 rounds per minute. Practical rates of semi-automatic and automatic fire depend on the skills of the rifleman, with the skilled one requiring to achieve at least 130 rounds per minute by the Makgato Defense Force training standards. However, during the Ninvite War it was found that the sustained automatic fire could heat the chamber enough to cause a round cook-off, as well as overheat and damage the barrel, which could not be easily replaced like on the proper machine guns. Because of that, it was recommended not to fire more than 15-20 rounds per burst unless in emergency.

Variants

Numerous variants of the Pattern 1950 rifle were made during its development and production run. The following list includes development prototypes, surviving in the SMT Arsenal Museum, major production variations and notable experimental variants. It excludes variant copies and small revisions made during the production.

Development prototypes

• 1948 prototype rifle: the first, semi-automatic prototype of the rifle. Featured rotating bolt and a 65-round drum magazine of the Pattern 1922. Failed to meet the selective-fire requirement, and was only fit for small-scale artisanal production. Four prototypes are known to have survived.
• 1949 prototype rifle: the second, selective-fire prototype of the rifle. Featured rotating bolt and a revised 65-round drum magazine with feed lips. While resolving the issues of the 1948 prototype, the design was not yet fit for mass production. About 36 were assembled, of which 22 are known to have survived.
• 1950 prototype rifle: the final, selective-fire prototype of the rifle. Featuring a roller-locked bolt instead of a rotating bolt, and modified with the SRZ experience in weapons manufacturing. 36 were made, 25 are known to have survived.

Production variants

• Pattern 1950 Rifle: the first production version of the rifle based on the 1950 prototype, adding a muzzle break and a removable standard bipod.
• Pattern 1965 Rifle: the second production version of the rifle, revised for easier field maintenance. It is also featuring a pistol grip and a place for a PU scope on top of the rifle. Main infantry rifle of the Thundering Elephant Army.
• Pattern 1985 Rifle: the third production version of the rifle. Capable of mounting an underbarrel grenade launcher instead of the standard bipod, or with an adapted bipod introduced in 1987. Also adapted for the PSO-1 scope, mounted on a dovetail joint on the left side of the rifle. Small numbers participated in the late stages of the Ninvite War.
• Pattern 2006 Rifle: the final production version of the rifle. Fitted with a Picatinny rail on top of the rifle box and another one under the barrel, allowing to mount a variety of accessories, with a separate mounting for a standard bipod. Using composite materials instead of wood and advances in metal processing reduced the weight to 5.2kg. Produced only by the Lower Karana and Imo arsenals due to the need for cheap and readily available composites.

Experimental variants

• Experimental 2022 Rifle: an attempt by the Kanokari Arsenal Bureau to devise the next-generation battle rifle, using experience from the Pattern 2006 Rifle and further advancements in available materials. The rifle uses a new 7.2x70mm cartridge but retains the operating principles of the Pattern 1950 rifle. Not formally adopted as of 2024.

Users

• Itayana Solar Autocracy ─ formally decommissioned in 2005, the production continues to update the stocks for the reserve units.
• Amayana Makgato Federation ─ formally decommissioned in 2013, about 1.3 million is estimated to be in the warehouses.
• Republic of Charnea ─ reportedly used by some of the ICA troops during the Ninvite War, but never formally adopted.
• Agysimba ─ tens of thousands were bought from the 36th Governorate during the M'Biruna Civil War.