Daewoo Precision Industries K2 vs LMT Modular Ambidextrous Rifle System

See Users^[source]

Gulf War United Nations Operation in Somalia II War in Afghanistan Iraq War Conflict in the Niger Delta 2006 Fijian coup d'état Iraqi insurgency War in Iraq Syrian Civil War^[source]

Agency for Defense Development Daewoo Precision Industries^[source]

Lewis Machine & Tool Company^[source]LMT Modular Ambidextrous Rifle System · Designer

1972–1983^[source]

Daewoo Precision Industries (1982–1999) Daewoo Telecom (1999–2002) Daewoo Precision (2002–2006) S&T Daewoo (2006–2012) S&T Motiv (2012–2021) SNT Motiv (2021–present) Dasan Machineries (2016–present)^[source]

Lewis Machine & Tool Company^[source]LMT Modular Ambidextrous Rifle System · Manufacturer

US $727.00^[source]

1982–present^[source]

See Variants^[source]

5.56×45mm NATO .223 Remington^[source]

5.56×45mm NATO 7.62×51mm NATO 6.5mm Creedmoor^[source]LMT Modular Ambidextrous Rifle System · Cartridge

The MARS-L (light) assault rifle variants are chambered for the 5.56×45mm NATO intermediate cartridge , and the MARS-H (heavy) battle rifle and designated marksman rifle variants for the 7.62×51mm NATO , 6.5 mm Creedmoor or similar fully powered cartridges .^[source]Design · explicit MARS-L/MARS-H cartridge scope

MARS-H based designated marksman variant, chambered in 6.5 mm Creedmoor .^[source]L129A2 · explicit MARS-L/MARS-H cartridge scope

Swiss MARS-H-based designated marksman rifle chambered in 7.62×51mm NATO.^[source]7.62mm Zf Stgw 20 · explicit MARS-L/MARS-H cartridge scope

LMT's MRGG-A is a member of its Modular Ambidextrous Rifle System-Heavy (MARS-H) family, which are commonly described as AR-10-style rifles, but is chambered to fire the 6.5mm Creedmoor round.^[source]MK24 Mid-Range Gas Gun-Assault · explicit MARS-L/MARS-H cartridge scope

Gas operated , Rotating bolt (long-stroke piston)^[source]

Gas-operated , rotating bolt (internal piston, not direct impingement ) or Short-stroke piston^[source]LMT Modular Ambidextrous Rifle System · Action

Various STANAG Magazines .^[source]

5.56×45mm NATO : 30-round detachable box magazine 7.62×51mm NATO 20-round detachable box magazine^[source]LMT Modular Ambidextrous Rifle System · Feed system

Iron sights^[source]

Daewoo Precision Industries K2 assault rifle is the service rifle of the South Korean military . It was developed by the South Korean Agency for Defense Development and manufactured by SNT Motiv (formerly Daewoo Precision Industries) and Dasan Machineries (since 2016). Shoulder-fired and gas-operated , the K2 is capable of firing both 5.56×45mm NATO and .223 Remington ammunition; however, using .223 Remington is only recommended for practicing for short distance.^[source]Daewoo Precision Industries K2 · Lead; only the objects and conditions stated in this passage

An indigenous rifle program started in 1972. Initial requirements were for prototypes to be chambered in 7.62×51mm NATO as it was the only standardized ammunition for the Western Bloc . Prototypes XB-1 through XB-5 were akin to AR-15 -series rifles with some exterior changes; designers attempted to use as many M16 components as possible to save time and money, such as the direct gas impingement operation, sights and handguards. In 1975, the XB-6 prototype with long-stroke gas piston was created, and converted into 5.56×45mm NATO chambered XB-7 in 1977.^[source]Daewoo Precision Industries K2 · Development; only the objects and conditions stated in this passage

The K2 and K1A had become outdated for international markets after 2000; in addition to lack of ability to add accessories, the K1A had become too large, underpowered and un-ergonomic as a personal defense weapon or special operation carbine and the K2 was too long. In 2012, S&T Motiv introduced the K2C, or K2 Carbine. It has a shortened 310 mm (12 in) barrel with adjusted gas piston, upper receiver/handguard Picatinny rail , and right side-folding M4 -style retractable stock; it weighs 3.3 kg (7.3 lb), is 880 mm (35 in) long with stock extended and 630 mm (25 in) with stock folded. In 2013, a new tan-painted K2C with Magpul CTR stock and detachable rear sight was unveiled, but not actually produced. In 2017, The New K2C-1/2 variants with a foldable front sight and ambidextrous selector switches were unveiled. In 2018, the new K2C-1 variant was renamed K2C CQB ( Close-quarters battle ).^[source]Daewoo Precision Industries K2 · Development / K2C; only the objects and conditions stated in this passage

S&T Motiv developed the K2A to enhance its domestic appeal, which retained the full-length K2's features (including bayonet lug) and utilized the upgrades of K2C, such as the Picatinny rail on the upper receiver and handguard, as well as an Colt M4-style collapsible stock. It is slightly heavier than the original model, partly due to the screw attachment method of its rail, weighing 3.6 kg (7.9 lb), while the original K2 weighed 3.4 kg (7.5 lb). Afterward, the K2A was renamed to K2C1. The "C" in the name represented that only the exterior was modified, without any enhancements made to its performance, in accordance with the Korean Defense Specifications (KDS). Subsequently, the K2C1 was selected by the ROK forces as their standard weapon. The K2C1 underwent various changes compared to the K2A, which included an extended handguard rail with optional lower and side Picatinny rail sections, a flattop upper receiver featuring a detachable rear backup sight, and a new Magpul CTR-like collapsible stock. As of 2016, approximately 200,000 K2C1s were in active service with frontline troops.^[source]Daewoo Precision Industries K2 · Development / K2C1; only the objects and conditions stated in this passage

Six different prototypes were made during the XB development. Of the 6 designs, the XB6 was selected. Some parts of the XB6 resembled the FN FNC such as the suppressor and sights. Further development of the XB6 evolved into the XB7 and finally the XB7C, also known as the XK2. Externally similar in appearance to the AR18 , the K2 uses polymer for the forearm, pistol-grip and side-foldable buttstock. The fire control system and bolt carrier group are derived from the American M16 rifle. The gas operating system is derived from the Russian AKM rifle. The K2 uses the same magazine as the M16. The barrel rifling has 6 grooves, 185 mm (1-in-7.3) right hand twist. The K2 has 3 selective firing modes: semi-auto, 3-round burst, and full automatic.^[source]Daewoo Precision Industries K2 · Design; only the objects and conditions stated in this passage

The K2 can be equipped with the DPI K201, an under-barrel 40×46mm single shot grenade launcher patterned after the American M203 . The Republic of Korea Armed Forces originally planned to replace the entire K2 with new S&T Daewoo K11 dual-barrel air-burst weapon. However, high cost and skepticism over the effective firepower of the 20mm grenade led to the decision to provide 2 K11s to each squad, keeping 2 grenadiers as well. Consequently, the standard 9-person infantry squad of the Republic of Korea Armed Forces is currently equipped with 2 K2 rifles, 2 K2 rifles with K201 grenade launcher, 2 K11 DAWs, 1 K3 light machine gun, and the rest with either K1 or K2.^[source]Daewoo Precision Industries K2 · Design; only the objects and conditions stated in this passage

When personnel from the South Korean army special command were invited to see the XB-series prototypes, they requested the development of a new submachine gun to quickly replace a series of different weapons in their use. With no time to develop a new weapon, ADD made one based on the XB rifle prototypes called XB-S (short). It used a direct impingement gas tube rather than a piston to achieve the required short length, which was faster to make since they had short-barrel CAR-15 designs to work off of and no time to redesign a new short gas piston. The barrel used 1:12 inch rifling to fire M193 rounds, as during its development there were no plans to adopt SS109 ammunition in the South Korean army. The shortened design was adopted as the K1A in 1981 and issued to special forces, commanders, radio operators and others who needed a short SMG-like weapon.^[source]Daewoo Precision Industries K2 · Design / K1 and K2 weapons systems; only the objects and conditions stated in this passage

While the K1A is commonly regarded as an shorter version of the K2, the K1 is a separate weapon altogether. The primary differences between the two weapons include: development time and intent (the K1 took less time to develop and entered service sooner than the K2, and despite being technically a carbine-length rifle was designated as a submachine gun because it was intended to replace the M3 Grease Gun ; while the K2 was developed from the start as a service rifle); rifling (K1: 1-in-12 twist; K2: 1-in-7.3 twist); and gas system (the K1 uses a direct impingement gas system, while the K2 uses a long stroke gas piston system). In addition, some parts are not interchangeable between the two weapons even though they can use the same cartridge (KM193 (.223 Remington) 5.56 caliber; the K2 can also utilize the K100 (SS109) 5.56 caliber round).^[source]Daewoo Precision Industries K2 · Design / K1 and K2 weapons systems; only the objects and conditions stated in this passage

K2/AR-100: Semi-automatic 5.56×45mm NATO version for US civilian market^[source]Daewoo Precision Industries K2 · Variants / K2; only the objects and conditions stated in this passage

DR-100/DR-200: Semi-automatic 5.56×45mm NATO version for US civilian market post 1989 import ban of non "sport" foreign semi-automatic rifles . Primarily difference of a thumb-hole stock in place of the original folding stock.^[source]Daewoo Precision Industries K2 · Variants / K2; only the objects and conditions stated in this passage

DR-300: Semi-automatic 7.62×39mm version for civilian market.^[source]Daewoo Precision Industries K2 · Variants / K2; only the objects and conditions stated in this passage

K2C (C=" Carbine "): Carbine version of K2 rifle with Picatinny rail, M4-type buttstock, barrel reduced to 310 mm (12 in). Exports started in 2012.^[source]Daewoo Precision Industries K2 · Variants / K2; only the objects and conditions stated in this passage

K2C CQB: A manufacturer-proposed variant of K2C for close quarters combat operations, which was first unveiled by the name "The New K2C-1" in the ADEX 2017, and later renamed as "K2C CQB" in the DX KOREA 2018. It has a 310 mm (12 in) barrel and has a firing range up to 500 meters with a Colt SCW-type buttstock, flip up sights, a horizontally modified magazine well angle, integrated picatinny rails and ambidextrous selector switches.^[source]Daewoo Precision Industries K2 · Variants / K2; only the objects and conditions stated in this passage

(C="Exterior design changed without performance improvements", by the South Korean Defense Specification ) : New variant featuring a quad accessory rail, full-length 1913 Picatinny optics rail, an AR-15-style six position collapsing and a Magpul-based foldable stock. Comes in two barrel lengths, 305 mm (12 in) and 465 mm (18.3 in). It was officially sent into production in March 2016 with first deliveries in June 2016.^[source]Daewoo Precision Industries K2 · Variants / K2C1; only the objects and conditions stated in this passage

S&T Daewoo (now S&T Motiv) proposed the XK8 , a 5.56×45mm NATO bullpup version of the K2 in early 2000. After a series of field tests, the XK8 was rejected by the South Korean military and was never mass-produced.^[source]Daewoo Precision Industries K2 · Replacement versus upgrades; only the objects and conditions stated in this passage

The development of the S&T Daewoo K11 dual-barrel air-burst weapon, which uses 5.56×45mm NATO and 20×30mm air-burst grenade, prompted the South Korean military to plan for the replacements of all K2 rifles in service with the K11, making K11 the standard service rifle for the armed forces. However, due to the K11's extremely high cost and weight for a standard rifle, the armed forces scrapped its original plan and decided to provide 2 K11 per squad in order to increase firepower. The K11 project was subsequently cancelled and as a result, the K2 was retained as the standard service rifle.^[source]Daewoo Precision Industries K2 · Replacement versus upgrades; only the objects and conditions stated in this passage

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