KS Carbine | |
---|---|
Type | Assault rifle |
Place of origin | United States |
Service history | |
In service | 2023–present |
Used by | British Armed Forces |
Production history | |
Designed | 2022 |
Manufacturer | Knight's Armament Company |
Produced | 2022–present |
Specifications | |
Mass | 3.12 kg (6.9 lb) |
Length | 818–869 mm (32.2–34.2 in) |
Barrel length | 292.1 mm (11.50 in), 347.98 mm (13.700 in), 368.3 mm (14.50 in) |
Cartridge | 5.56×45mm NATO |
Action | Gas-operated, rotating bolt |
Feed system | STANAG magazine |
Sights | Folding Back-Up Iron Sights |
The KS (Knight's Stoner) Carbine, is a series of Armalite AR-15 style rifles produced by Knight's Armament Company (KAC). It is designed as an improved version of their SR-16 family of rifles. The 13.7" KS-1 variant was adopted as the L403A1-AIW by the British Armed Forces in 2023 to replace the L85A2-A3 and L119A1-A2 rifles used by British Army and Royal Marines special operations-capable forces.
The KS family of rifles was unveiled at military small arms conventions in 2022 as being developed for an international special operations forces (SOF) requirement. [1] In September 2023, the British Armed Forces selected the KS-1 rifle under Project Hunter to replace the L85A2-A3 and L119A1-A2 rifles used by the British Army Special Operations Brigade and elements of the Royal Marines including strike companies and the Surveillance and Reconnaissance Squadron. [2] [3] [4]
The KS-1 has been given the designation L403A1 and is known as the Alternative Individual Weapon (AIW) system. [4] The Royal Marines have purchased more than a thousand KS-1 rifles and the British Army has purchased 1,620 KS-1 rifles worth £15 million. [3] [4] Knights Armament's submission (KS-1) was selected over other notable competitors including Heckler & Koch, SIG Sauer, Daniel Defense, and Glock. [2] The UK Ministry of Defence (MoD) contract includes a £90 million option to purchase up to 10,000 rifles over the next decade. [4]
The KS-1 has also been seen in use by units of the United Kingdom Special Forces (UKSF) in training exercises. As of 2024, it is unconfirmed whether it is being evaluated as a replacement for the L119A2 rifles currently in service.[ citation needed ]
The KS series features a self-indexing, highly-efficient gas system with a straight gas tube design. The fitment of the gas system minimizes gas pressure loss between the gas block and carrier key. The gas block notably is held in place with a nut which simplifies removal and maintenance.
The KS rifles feature an enhanced bolt carrier group with Knights Armament's E3 Enhanced Bolt. It is a proprietary bolt which features an enlarged bolt face, rounded lugs, reduced cam pin, and proprietary extractor and firing pin designs. [5] These features increase the firearm's durability and reliability.
Unlike most AR-style rifles, the lower receiver of the KS is fully-ambidextrous. The fire control safety, magazine release, and bolt catch/release are mirrored on both sides of rifle. This makes the KS rifle one of only three fully-ambidextrous M16/M4-style platforms fielded by militaries along with the Modular Ambidextrous Rifle System (MARS) from Lewis Machine and Tool Company and the M6IC from LWRC International, as well as one of five in total including the Radian Ambidextrous Dual Action Catch (ADAC), and the Primary Weapon Systems Mk 1 MOD 2 lower receivers that were developed and released after 2023.
The KS rifles feature Knights Armament's Quick Detach Coupling (QDC) flash hiders and a drop-in two-stage match trigger. All current KS rifles feature cold hammer forged barrels which are chrome-lined. In addition, a free-floating handguard covers the entire length of the barrel, which helps to protect the barrel from damage. [6] The current series of KS rifles is chambered in 5.56x45mm NATO and comes in four barrel length configurations (11.5", 13.7", 14.5", 16").
13.7" heavy-profile barrel with mid-length gas system. The barrel features distinctive ball-mill dimpling for weight-relief. When paired with a small high-efficiency suppressor, the KS-1 notably has a similar overall length to a 10.3" M4 carbine with a full-sized suppressor. [7]
14.5" barrel with mid-length gas system.
11.5" barrel with carbine-length gas system.
16" barrel with mid-length gas system.
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