ADCOR A-556 | |
---|---|
Type | Assault rifle/carbine |
Place of origin | United States |
Production history | |
Designer | Adcor Defense |
Manufacturer | Adcor Defense |
Produced | 2010–2020 |
Variants | ADCOR A-556 Elite |
Specifications | |
Cartridge | 5.56×45mm NATO |
Action | Rotating bolt, selective fire |
Muzzle velocity | 2,800 ft/s (850 m/s) (5.56 mm from a 14.5 in barrel) |
Feed system | STANAG-compliant magazine |
The ADCOR A-556 is an assault rifle based on the M16/M4 series. It is produced by the Adcor Defense Company and was one of the contenders in the US Army Individual Carbine Competition to replace the M4 Carbine.
In 2005, Adcor Defense was contracted by Colt to produce upper receivers for the M4 Carbine. Adcor was able to produce 1,000 uppers per day, compared to 450 uppers per day that Colt was able to manufacture. [1] After years of production, Adcor Defense decided to improve upon the weapon. They claimed it was not a “new and improved” AR, but a patented revolutionary gas piston system with other key features that set it apart from all other M4-type rifles. [2]
In early 2010, Adcor sent the ADCOR A-556 rifle to H.P. White Laboratory, known for small arms and ammunition research, development, and testing, to test the reliability of the design. Testing took place from March to April. 6,000 rounds were fired in 120 round cycles, and the guns were lubricated and allowed to cool after 600-round intervals. During the tests, no parts had to be replaced and there were no jams, stoppages, or malfunctions of any kind. Following this, the A-556 was able to shoot a .88 MOA group at 100 yards with 69-grain match ammo. [3]
On December 8, 2010, Adcor announced production of the A-556 rifle to the civilian market. On June 27, 2011, it was announced that the improved A-556 Elite variant would be available for sale to the public. In June 2012, a soldier was seen in Afghanistan with a A-556 upper receiver with a 10.5 inch barrel on an M4 lower receiver. [4]
On May 12, 2011, Adcor announced that its A-556 rifle had been entered in the U.S. Army's Individual Carbine competition. They say their design increases the reliability, accuracy, and lethality of the existing soldier weapon. "The A-556 combines a new piston system with an exclusive ejection port dust wiper with cover, an ambidextrous forward placing charging handle, and a new key-locked, highly rigid rail system." On May 4, 2012, the A-556 Elite version was selected into phase II of the competition. [5] The Individual Carbine competition was cancelled before a winning weapon was chosen. [6] On 17 July 2013, Adcor announced it would not protest the Army's decision to terminate the program, and would focus on delivering A-556 rifles to commercial customers. Test results made available to the company said the Army found the A-556 provided “outstanding” accuracy, even after firing thousands of rounds.[ citation needed ]
The cornerstone of the A-556 rifle design is the piston operating system. A gas-driven piston is incorporated into the upper half of the forward rail system and never touches the barrel. This makes the barrel free-floating, which increases accuracy. The operating rod is connected to the bolt carrier group and rides through a machined boss in the receiver rail system interface, keeping the bolt carrier in a linear plane as it operates. This eliminates carrier tilt. A spring-loaded dust shield mounted on the bolt carrier allows the bolt carrier to return to ready position. The port dust wiper moves into the ejection port opening flush of the upper receiver.
A forward placed, foldable, non-reciprocating charging handle is mounted on the handguard, allowing the weapon to be charged or cleared while keeping it pointed toward a target. It is ambidextrous, being able to be removed without tools to either side of the gun. The A-556 has integrated picatinny rails for mounting accessories. The handguard has an M4 profile, so the charging handle is placed directly above the rail. Therefore, it needs a completely unobstructed space on the rail to charge the rifle, negating the usefulness of the rail on the side it is on. [7] By contrast, on weapons like the Adaptive Combat Rifle and the FN SCAR, the charging handle is raised off the side rails, allowing things to be mounted.
ADCOR A-556 rifles come in barrel lengths of 10.5", 14.5", 16", 18", and 20". [8]
The IMI Galil is a family of Israeli-made automatic rifles chambered for the 5.56×45mm NATO and 7.62×51mm NATO cartridges. Originally designed by Yisrael Galili and Yakov Lior in the late 1960s, the Galil was first produced by the state-owned Israel Military Industries and is now exported by the privatized Israel Weapon Industries.
The M4 carbine is a 5.56×45mm NATO assault rifle developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle.
The Colt Canada C7 and C8 are a Canadian family of service rifles, manufactured by Colt Canada, having similar design and function to the Colt M16A3.
The FN F2000 is a 5.56×45mm NATO bullpup rifle, designed by FN Herstal in Belgium. Its compact bullpup design includes a telescopic sight, a non-adjustable fixed notch and front blade secondary sight. The weapon has fully ambidextrous controls, allowed by a unique ejection system, ejecting spent cartridge casings forward and to the right side of the weapon, through a tube running above the barrel. The F2000 made its debut in March 2001 at the IDEX defence exhibition held in Abu Dhabi, in the United Arab Emirates.
The Stoner 63 is a 5.56×45mm NATO modular weapon system. Using a variety of modular components, it can be configured as an assault rifle, carbine, top-fed light machine gun, belt-fed squad automatic weapon, or as a vehicle mounted weapon. Also known as the M63, XM22, XM23, XM207 or the Mk 23 Mod 0 machine gun, it was designed by Eugene Stoner in the early 1960s. Cadillac Gage was the primary manufacturer of the Stoner 63 during its history. The Stoner 63 saw very limited combat use by US military units during the Vietnam War. A few were also sold to law enforcement agencies.
The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 carbine developed by the US Navy.
The Robinson Armament Co. XCR is a multi-caliber, gas piston weapon system developed by Robinson Armament Co. for U.S. Special Operations Command (SOCOM) to fill the requirements of the SOF Combat Assault Rifle, or SCAR competition, but was disqualified on a technicality due to late delivery of blank firing adapters. It has been offered to law enforcement, the military, and the general public since 2006.
The Heckler & Koch HK416 is an assault rifle chambered for the 5.56×45mm NATO cartridge. It is designed and manufactured by the German company Heckler & Koch.
The two most common assault rifles in the world are the Soviet AK-47 and the American M16. These Cold War-era rifles have been used in conflicts both large and small since the 1960s. They are used by military, police, security forces, revolutionaries, terrorists, criminals, and civilians alike and will most likely continue to be used for decades to come. As a result, they have been the subject of countless comparisons and endless debate.
The Barrett REC7 is an American firearm manufactured as a selective-fire fully-automatic and semi-automatic rifle by Barrett Firearms. It is an M4 carbine utilizing a short-stroke gas piston system and is available in either 5.56×45mm NATO or 6.8mm Remington SPC. The REC7 is Barrett's second AR-pattern rifle chambered for the 6.8mm Remington SPC cartridge, the first being the Barrett M468 rifle. The 6.8 SPC-chambered M468 rifle employed the same Stoner expanding gas system as the M4.
The SG 550 is an assault rifle manufactured by SIG Sauer AG in Switzerland. "SG" is an abbreviation for Sturmgewehr. The rifle is based on the earlier 5.56×45mm NATO SIG SG 540.
The M6 is a series of carbines designed and manufactured by LWRC International. It is based on the M4 carbine, with which it shares 80% of its parts. The 'M' model name is not a US military designation. Like the HK416, it features a proprietary short-stroke self-regulating gas piston system and bolt carrier/carrier key design, which prevents trapped gases from contacting the bolt carrier or receiver of the weapon. The manufacturer claims that this reduces the heating and carbon fouling of the internals, simplifies field maintenance, and improves reliability.
The T91 is a gas-operated, magazine-fed, assault rifle produced by the 205th Armory of National Defense in the Republic of China (Taiwan). The T91 is Taiwan’s equivalent technology to the advanced German HK416 assault rifle and was developed by Taiwan several decades earlier ahead of the German HK416. It is based on the combat proven and reliable T86 assault rifle, incorporating features from the M16 and AR-18 with advanced Taiwanese technological innovations integrated into their firearm for extreme long term combat durability, reliability and war fighting effectiveness. The T91 is lighter and shorter than the T65 it replaces, the T91 is also 2 pounds (0.91 kg) lighter, more accurate with less recoil and much easier to disassemble compared to the German HK416 and has an adjustable 3-position telescoping stock.
The Beretta ARX160 is an Italian modular assault rifle manufactured by Beretta. Developed for the Italian Armed Forces as part of the Soldato Futuro program, the ARX160 was launched in 2008 as a commercial weapon system independent from the Soldato Futuro ensemble, complete with a companion single-shot 40×46mm NATO low-velocity grenade launcher, called the GLX160, which can be mounted underneath the rifle or used with an ad hoc stock system as a stand-alone weapon.
The Adaptive Combat Rifle (ACR) is a modular assault rifle formerly designed by Magpul Industries of Austin, Texas, and known initially as the Masada.
Lewis Machine & Tool Company (LMT) is an American armaments company founded by Karl Lewis, in 1980. It manufactures weapon systems, including a variant of the M4 carbine and the M203 grenade launcher. Its products are used by the military forces of the United Kingdom, New Zealand, Estonia and the United States. It formerly produced forged FN FAL receivers for Illinois-based DS Arms.
The CAR 816, also called Caracal Sultan or simply Sultan, is a 5.56×45mm NATO, gas-operated, magazine-fed assault rifle that is produced by Caracal International in Abu Dhabi, United Arab Emirates. The rifle is also called Sultan in memory of the Emirati Colonel Sultan Mohammed Ali al-Kitbi who was killed in action in Saudi-led intervention in Yemen.
The Kalashnikov Concern AMB-17, is an integrally suppressed assault rifle that uses a heavy subsonic 9×39mm SP5 cartridge and armor-piercing SP6 cartridge. It was developed and manufactured in the late 2010s by Kalashnikov Concern, based on the Yevgeny Dragunov MA Compact Rifle and unveiled at the Russian Army Expo 2017 alongside the AM-17. The weapon is intended for use as a close quarters weapon, primarily for special units of the Russian Interior Ministry and the Russian Army to replace the AS Val and VSS Vintorez firearms.
The MDR is a family of autoloading bullpup rifles designed by Desert Tech in 2014. A second generation version of the rifle is marketed as the MDRX.
The KS Carbine, is a series of rifles produced by Knight's Armament Company (KAC). It is designed as an improved version of their Armalite AR-15 clone called SR-16. The 13.7" KS-1 variant was adopted as the L403A1-AIW by the British Armed Forces in 2023 to supplement the L85A2-A3 and L119A1-A2 rifles used by British Army and Royal Marines special operations-capable forces.