Robinson Arms XCR
Encyclopedia
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 satisfy 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. Robinson Armament continued development and the XCR is now being offered to law enforcement, the military and general public. Deliveries of the rifle began in mid-2006. The XCR was displayed to U.S. Army
officials during an invitation-only Industry Day on November 13, 2008. The goal of the Industry Day was to review current carbine technology prior to writing formal requirements for a future replacement for the M4 Carbine
.
The XCR utilizes a heavy duty bolt and extractor connected to an AK-47
type gas piston. The bolt and extractor are designed and patented by Robinson Arms, and promoted as offering higher performance over eight lug M16/M4
type bolts. Other features include a folding stock which eases storage space consumption and deploying from a vehicle, in addition to folding M4 Carbine
style stocks for those who prefer length of pull adjustments; it also has a monolithic top Picatinny rail
with side and under-barrel rails, and forward assist
integrated into left-side charging handle. Approximately 5,000 XCR carbines have been sold since its introduction in 2006.
7.62x39
are the current conversion kits available. 6.5 Grendel was slated for future release in 2009, but is currently on hold due to technical hurdles
In addition to conversion kits, complete factory guns in the alternate calibers are also sold.
The XCR employs a Kalashnikov type, gas operated action with the bolt carrier attached to a long-stroke gas piston; the gas chamber is located above the barrel.
The proprietary bolt is a three-lug design that locks onto the barrel extension leaving the upper receiver unstressed. There is no need to check the headspace when changing barrels. A steel fixed ejector is attached to the inside of the receiver, held in place by two bolts. The manufacturer claims this design provides stronger ejection than what is offered on the AR-15’s spring-loaded ejector design. The ejection pattern is to the two o'clock position of the operator, with an optimum distance of 15 ft to 20 ft depending on ammunition type and gas setting.
Magazines are STANAG 4179 type.
The quad rail system is integrated into the upper receiver and compatible with most 1913 Picatinny devices. The top rail is monolithic and 17” long, providing a rigid, uninterrupted plane for mounting optics and BUIS (Backup Iron Sights); the 3, 6, and 9 O'clock Position Rails are 8" long.
Production of the XCR-L variant of the rifle began in mid-2006.
The XCR-L is currently available in 5.56mm, 6.8mm Remington SPC and 7.62x39mm cailbers. Each of these calibers is available in kit form for converting an existing rifle to one of the other calibers.
The XCR-M .308 was officially confirmed via Robinson Arms email circulation to a public reveal at the upcoming SHOT show 2011.
The 6.8 Remington SPC variant began shipping in November 2007.
The 7.62x39mm rifles and conversion kits began shipping in July 2008.
In August 2009 Robinson Arms began shipping 3 different sized upper receivers enabling PDW and pistol style variants:
Variants are also available in "California" versions which are limited to meet the more restrictive State of California
firearms laws.
Robinson Armament also produces a 18.6" barrel version for the Canadian market, which makes the XCR "NON-Restricted" which increases its Canadian Market as it is available to holders of the standard PAL (possession and Acquisition License) without a restricted firearm status, needed to purchase handguns and rifles like the AR-15. The XCR rifles intended for the Canadian market are shipped with fixed skeletonized stocks only although aftermarket collapsible or folding stocks are available as an accessory. Also these rifles ship with a single magazine pinned to accept only 5 rounds.
Since its introduction in 2006, components of the XCR have been updated. Most of these enhancements are available to existing XCR owners.
Robinson Armament Co.
Robinson Armament Co. is a firearms manufacturer founded in 1996 which is based Salt Lake City, Utah, USA. It produces and markets many different civilian and military oriented designs in the United States....
XCR is a multi-caliber, gas piston weapon
Weapon
A weapon, arm, or armament is a tool or instrument used with the aim of causing damage or harm to living beings or artificial structures or systems...
system developed by Robinson Armament Co.
Robinson Armament Co.
Robinson Armament Co. is a firearms manufacturer founded in 1996 which is based Salt Lake City, Utah, USA. It produces and markets many different civilian and military oriented designs in the United States....
for U.S. Special Operations Command (SOCOM) to satisfy 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. Robinson Armament continued development and the XCR is now being offered to law enforcement, the military and general public. Deliveries of the rifle began in mid-2006. The XCR was displayed to U.S. Army
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...
officials during an invitation-only Industry Day on November 13, 2008. The goal of the Industry Day was to review current carbine technology prior to writing formal requirements for a future replacement for the M4 Carbine
M4 Carbine
The M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...
.
Overview
AK-47
The AK-47 is a selective-fire, gas-operated 7.62×39mm assault rifle, first developed in the Soviet Union by Mikhail Kalashnikov. It is officially known as Avtomat Kalashnikova . It is also known as a Kalashnikov, an "AK", or in Russian slang, Kalash.Design work on the AK-47 began in the last year...
type gas piston. The bolt and extractor are designed and patented by Robinson Arms, and promoted as offering higher performance over eight lug M16/M4
M4 Carbine
The M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...
type bolts. Other features include a folding stock which eases storage space consumption and deploying from a vehicle, in addition to folding M4 Carbine
M4 Carbine
The M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...
style stocks for those who prefer length of pull adjustments; it also has a monolithic top Picatinny rail
Picatinny rail
The Picatinny rail or MIL-STD-1913 rail or STANAG 2324 rail or a "Tactical Rail" is a bracket used on some firearms in order to provide a standardized mounting platform. A similar system is the Weaver rail mount.-Description:...
with side and under-barrel rails, and forward assist
Forward assist
The forward assist on a rifle is a button found commonly on M16 and AR-15 styled rifles, usually located near the bolt closure, that when hit will push the bolt carrier forward, ensuring that the bolt is locked. In order to ensure that the extractor is clipped around the rim of the shell, the...
integrated into left-side charging handle. Approximately 5,000 XCR carbines have been sold since its introduction in 2006.
Caliber Conversions
The XCR is a multi-caliber weapon system. The base platform is chambered in 5.56x45 NATO. Conversions to other calibers and barrel lengths can be performed in 2 to 3 minutes without the need of a trained armorer, and using only a standard hex wrench, and consist of changing to the appropriately chambered barrel and bolt, replacing brass deflector (optional) and insertion of appropriate magazine. 6.8 Remington SPC6.8 mm Remington SPC
The 6.8 mm Remington SPC is a rifle cartridge that was developed with collaboration from individual members of United States Special Operations Command . Based upon the .30 Remington cartridge, it is midway between the 5.56×45mm NATO and 7.62×51mm NATO in bore diameter and velocity...
7.62x39
7.62×39mm
The 7.62×39mm round is a rifle cartridge of Soviet origin that was designed during World War II. It was first used in the RPD machine gun. Due to the worldwide proliferation of the SKS and AK-47 pattern rifles, the cartridge is utilized by both militaries and civilians alike.The 7.62×39mm...
are the current conversion kits available. 6.5 Grendel was slated for future release in 2009, but is currently on hold due to technical hurdles
In addition to conversion kits, complete factory guns in the alternate calibers are also sold.
Operating Mechanism
The proprietary bolt is a three-lug design that locks onto the barrel extension leaving the upper receiver unstressed. There is no need to check the headspace when changing barrels. A steel fixed ejector is attached to the inside of the receiver, held in place by two bolts. The manufacturer claims this design provides stronger ejection than what is offered on the AR-15’s spring-loaded ejector design. The ejection pattern is to the two o'clock position of the operator, with an optimum distance of 15 ft to 20 ft depending on ammunition type and gas setting.
Magazines are STANAG 4179 type.
Upper and Lower Receiver
The upper receiver is made from anodized aluminum forgings, and is non-stressed. It features a non-reciprocating charging handle on left side which also acts as a forward assist.The quad rail system is integrated into the upper receiver and compatible with most 1913 Picatinny devices. The top rail is monolithic and 17” long, providing a rigid, uninterrupted plane for mounting optics and BUIS (Backup Iron Sights); the 3, 6, and 9 O'clock Position Rails are 8" long.
History and variants
The XCR was designed in 2004 by Alex J. Robinson of Robinson Armament Co.Robinson Armament Co.
Robinson Armament Co. is a firearms manufacturer founded in 1996 which is based Salt Lake City, Utah, USA. It produces and markets many different civilian and military oriented designs in the United States....
Production of the XCR-L variant of the rifle began in mid-2006.
The XCR-L is currently available in 5.56mm, 6.8mm Remington SPC and 7.62x39mm cailbers. Each of these calibers is available in kit form for converting an existing rifle to one of the other calibers.
The XCR-M .308 was officially confirmed via Robinson Arms email circulation to a public reveal at the upcoming SHOT show 2011.
The 6.8 Remington SPC variant began shipping in November 2007.
The 7.62x39mm rifles and conversion kits began shipping in July 2008.
In August 2009 Robinson Arms began shipping 3 different sized upper receivers enabling PDW and pistol style variants:
- Standard Upper Receiver - The original length and designed to support barrel lengths from 11" to 18.6".
- Mini Upper Receivers - 15.25" long and designed to support barrel lengths from 9" to 18.6". Primarily intended for barrel lengths from 9" to 10".
- Micro Upper Receivers - 13.25" long and designed to support barrel lengths from 7.5" to 18.6". Primarily intended for barrel lengths from 7.5" to 8".
Variants are also available in "California" versions which are limited to meet the more restrictive State of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
firearms laws.
Robinson Armament also produces a 18.6" barrel version for the Canadian market, which makes the XCR "NON-Restricted" which increases its Canadian Market as it is available to holders of the standard PAL (possession and Acquisition License) without a restricted firearm status, needed to purchase handguns and rifles like the AR-15. The XCR rifles intended for the Canadian market are shipped with fixed skeletonized stocks only although aftermarket collapsible or folding stocks are available as an accessory. Also these rifles ship with a single magazine pinned to accept only 5 rounds.
Since its introduction in 2006, components of the XCR have been updated. Most of these enhancements are available to existing XCR owners.
- In November 2006 the firing pin was redesigned and made more durable and robust.
- The first few hundred XCRs shipped with Yankee Hill Machine (YHM) back up iron sights (BUIS). The most recent iteration ships either without BUIS or with BUIS designed by Midwest Industries.
- A 2nd generation adjustable gas system started shipping with XCR rifles in July 2007. The 1st generation gas system required tools (a 5/8" wrench) to adjust. The 2nd generation system can be adjusted by hand.
- The XCR's hammer was updated in July 2008 concurrent with the release of the 7.62x39 rifles/kits. The new heavier design allows the XCR to ignite some newer Wolf 7.62x39 ammunition made with extra-hard primers.
- In early 2009 Robinson began shipping rifles with an integral winter style trigger guard and new paddle style safety. A provision for a quick detachable sling loop was added to the stock mount.
- A two stage match trigger is available which will break at approximately 3.5 lbs. This trigger can be ordered with a new rifle or retrofitted to an older one. The older one was a two stage trigger that was about twice as heavy, and some complaints included trigger slap. As of May 2009, the new trigger has been shipping with all new rifles.
- Ambidextrous mag release was demonstrated at SHOT 2010 and is expected to be made available in the future.
- XCR-M .308 and XCR-L 5.45 calibers have been confirmed for public announcement and display at SHOT show 2011 via Robinson email bulletin <
See also
- List of firearms
- Beretta ARX 160
- Robinson Armaments M96 ExpeditionaryRobinson Armaments M96 ExpeditionaryThe M96 is a semi-automatic rifle made by the Robinson Armament Co. of Salt Lake City, Utah, USA.-Description:The M96 is chambered for the .223 Remington/5.56 mm NATO cartridge, and uses STANAG 4179 AR-15 magazines. Barrels have 1-in-9 twist ratio as is common for .223 Remington semiautomatic rifles...
- USSOCOMUnited States Special Operations CommandThe United States Special Operations Command is the Unified Combatant Command charged with overseeing the various Special Operations Commands of the Army, Air Force, Navy and Marine Corps of the United States Armed Forces. The command is part of the Department of Defense...
- FN SCARFN SCARThe Special Operations Forces Combat Assault Rifle, or SCAR, is a modular rifle made by FN Herstal for the United States Special Operations Command to satisfy the requirements of the SCAR competition. This family of rifles consist of two main types...
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- Heckler & Koch XM8
- M4 CarbineM4 CarbineThe M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 designed by Eugene Stoner and made by ArmaLite. It is a shorter and lighter variant of the M16A2 assault rifle, with 80% parts commonality.It is a gas-operated,...