M4 Beowolf Varient Ammunition

This varient of ammunition for the M4 is a derivative of of the original .50 caliber ammunition used in machine guns. The first of the four is the m4's 5.56 round and the three rounds next to it are three different varents of the original .50 round . The m4's .50 round has some very serious stopping power. but the m4 origanal magazine can only contain 10 rounds of this vicious ammunition.

M4 Fully Customized

This M4 Varient includes 1 x Bipod 1 x 3x9 Scope 2 x Tactical Flashlights 1 x Laser 1 x Muzzle Flash Suppressor 1 x Gem Tech Silencer (Not Pictured)

M4 Beowolf Varient

The .50 Beowulf rifle is precision engineered with a forged, hard anodized upper and lower receivers to full Military Specification with a precision made, high quality, custom barrel assembly of various lengths. Available with a Medium length, military type two piece hand guard, or Medium length free floating hand guard (Options depend on model). The .50 Beowulf rifle retains a durability tested rotary locking bolt assembly and gas delay mechanisms operating reliably with the powerful .50 Beowulf ammunition under all conditions..50 Beowulf - Over Match Kit: .50 Caliber Beowulf Entry rifle Instruction Manual Cardboard packing case Technical Specifications: Caliber: .50 BeowulfOperation- Semi-Automatic, indirect gas opearted Bolt- Mil-spec finish bolt carrier with .50 Beowulf Bolt head Barrel- .50 Beowulf, six groove, 1 in 19 right hand twist, 16 inch long Sights- M4 type flat top receiver with picatinny sight mount Mag Capacity- 7 rounds. .50 Beowulf comes with its own uniquely designed single stack, seven round mag which incorporates special features to limit .223 use to 10 rounds. .50 Beowulf can also be used in most standard .223 mags. Designed to load 'single stack' in existing .223 magazines and requires no special inserts or adapters. The only modificaiton is that the magazine lips may require slight reshaping in certain magazines to ensure feed reliability.

U.S. citizen ownership

Sales of select-fire or full automatic M4s by Colt are restricted to military and civilian law enforcement. Only under special circumstances can a private citizen own an M4 Carbine in a select-fire or fully automatic configuration. While many machine guns can be legally owned with a proper tax stamp from the Bureau of Alcohol, Tobacco, Firearms and Explosives, an amendment to the Firearm Owners Protection Act of 1986 barred the transfer to private citizens of machine guns made in the U.S. after May 19, 1986. The only exception was for Special Occupational Taxpayers (SOT): licensed machine gun dealers with demonstration letters, manufacturers, and those dealing in exports and imports. As such, only the earliest Colt M4 prototypes built prior to May 19, 1986 would be legal to own by civilians not in the categories mentioned. However, as US firearms law considers the lower receiver of a M16/M4 type rifle to be the "firearm" (the serial numbered and, in the case of machine guns, registered under federal law, part of the weapon), a registered Colt M16 (much more common than an actual M4) may be configured as an M4 by replacing the M16 upper receiver/barrel assembly with an M4 top half, and replacing the fixed rifle stock with a 4-position telescoping M4 stock.

M4 Effectivness

An April 2002 presentation by the Natick Soldier Center presented by LTC Charlie Dean and SFC Sam Newland reported on lessons learned from M4 use in Afghanistan (such as use during Operation Anaconda):
34% of soldiers reported that their M4's handguards rattle and become excessively hot when firing.
15% reported that they had trouble zeroing the M68 reflex sight.
35% added barber brushes and 24% added dental picks to their cleaning kits.
Soldiers reported the following malfunctions:
20% reported double-feeding.
15% reported feeding jams.
13% reported that feeding problems were due to magazines.
89% of soldiers reported confidence in the weapon.
20% were dissatisfied with its ease of maintenance.
Soldiers requested the following changes:
55% requested the firearm be made lighter
20% requested a larger magazine

Design & Accessories

Design

M4 with M68 Close Combat Optic and AN/PAQ-4
The M4/M4A1 5.56 mm Carbine is a gas-operated, air-cooled, magazine-fed, selective fire, shoulder-fired weapon with a telescoping stock. A shortened variant of the M16A2 rifle with a 14.5 in (368 mm) barrel, the M4 provides the individual soldier operating in close quarters the capability to engage targets at extended range with accurate, lethal fire. The original M4 Carbine has semi-automatic and three-round burst fire modes, while the M4A1 has "semi" and "full auto", with no three-round burst. The M4 Carbine achieves over 80% commonality with the M16A2 rifle and was intended to replace the .45 ACP M3 submachine guns and selected M9 pistols and M16 rifle series with most Army units (this plan was thought to be changed with the development of the XM29 OICW and the XM8 carbine. However, both projects were cancelled.). The M4 Carbine is also capable of mounting the M203 grenade launcher,the M203A1 with a 9-inch barrel as opposed to the standard 12-inch barrel of the M203 used on the M16 series of rifle.
Some features of the M4 and M4A1 compared to a full-length M16-series rifle include:
Compact size
Shorter barrel 14.5 in (368 mm)
Telescoping buttstock
However, there have been some criticisms of the carbine, such as lower muzzle velocities and louder report due to the shorter barrel, additional stress on parts because of the shorter gas system, and a tendency to overheat faster than the M16A2.

Accessories

An M4 just after firing, with an ejected case in mid-air; the M203 and M68 CCO are attached.
Like all the variants of the M16 assault rifle, the M4 Carbine and the M4A1 Carbine can be fitted with many accessories, such as night vision devices, laser pointers, telescopic sights, bipods, either the M203 or M320 grenade launchers, the M26 MASS shotgun, and anything else compatible with a MIL-STD-1913 Picatinny rail.
Other common accessories include the AN/PEQ-2, Advanced Combat Optical Gunsight (ACOG), and M68 Aimpoint. EOTech holographic weapon sights are to be part of the SOPMOD II package. Visible and IR (infrared) lights of various manufacturers are also commonly attached using various mounting methods. As with all versions of the M16, the M4 accepts a blank-firing attachment (BFA).

M4 History And Variants

Except for the very first delivery order, all U.S. military-issue M4 and M4A1 possess a flat-top NATO M1913-specification (Picatinny) rail on top of the receiver for attachment of optical sights and other aiming devices — Trijicon TA01 and TA31 Advanced Combat Optical Gunsights (ACOG), EOTech 550 series holographic sights, and Aimpoint M68 Close Combat Optic (M68 CCO) being the favorite choices — and a detachable rail-mounted carrying handle. Standards are the Colt Model 920 (M4) and 921 (M4A1).

M4/M4A1
The major difference between these models is that the M4 has a "S-1-3" (safe/semi-automatic/3-round burst) trigger group while the M4A1 has a "S-1-F" (safe/semi-automatic/fully automatic) trigger group.

M4 MWS (Modular Weapon System)

M4 MWS (Modular Weapon System) shown with various accessories including M203 grenade launcher, RIS foregrip, removable carry handle/rear sight assembly, AN/PAQ-4 laser system, M68 CCO reflex sight, and the AN/PVS 4 night vision optics.
Colt Model 925 carbines were tested fitted with the Knight's Armament Corporation (KAC) M4 RAS under the designation M4E2, but this designation appears to have been scrapped in favor of mounting this system to existing carbines without changing the designation. The U.S. Army Field Manual specifies for the Army that adding the Rail Accessory System (RAS) turns the weapon into the M4 MWS or Modular Weapon System.

M4A1
The M4A1 carbine is a variant of the basic M4 carbine intended for special operations use. The M4A1 is used by almost all U.S special operation units. The M4A1 Carbine is specially favored by counter-terrorist and special operations units for close quarters combat because of the carbine's compactness and firepower. These features are also very useful in urban warfare. Although the M4 does not have as great of an effective range as the longer M16, many military analysts consider engagement with a non-specialized small arm above a range of 300 meters to be unnecessary. It is effective at ranges of 150 meters or less. It has a maximum effective range of about 500-600 meters.

In the last few years, M4A1 carbines have been refit or received straight from factory with barrels with a thicker profile under the handguard. This is for a variety of reasons such as heat dissipation during full-auto and accuracy as a byproduct of barrel weight. These heavier barrel weapons are also fitted with a heavier buffer known as the H2. Out of three sliding weights inside the buffer, the H2 possesses two tungsten weights and one steel weight, versus the standard H buffer, which uses one tungsten weight and two steel weights. These weapons, known by Colt as the Model 921HB (for Heavy Barrel), have also been designated M4A1, and as far as the government is concerned the M4A1 represents both the 921 and 921HB.

SOPMOD Block I

SOPMOD (Special Operations Peculiar Modification) Block I
USSOCOM developed the Special Operations Peculiar Modification (SOPMOD) Block I kit for the carbines used by units under its jurisdiction. The kit features an M4A1 carbine, a Rail Interface System (RIS) handguard developed by Knight's Armament Company, a shortened quick-detachable M203 grenade launcher and leaf sight, a KAC sound suppressor, a KAC back-up rear sight, an Insight Technologies AN/PEQ-2A visible laser/infrared designator, along with Trijicon's ACOG and Reflex sights, and a night vision sight. This kit was designed to be configurable (modular) for various missions, and the kit is currently in service with special operations units.

SOPMOD Block II
A second-generation SOPMOD kit (now known as SOPMOD II) is currently under development, with many different manufacturers competing for a contract. Notable bidders include Knight's Armament Company, Atlantic Research Marketing Systems (ARMS), and Lewis Machine & Tools. Daniel Defense has won the contract for the RIS-II, the next generation of rail handguards.
Variants of the carbine built by different manufacturers are also in service with many other foreign special forces units, such as the Australian Special Air Service Regiment (SASR). While the SASR uses weapons of essentially the same pattern built by Colt for export (Colt uses different models to separate weapons for the U.S. military and those for commercial/export purposes), the British SAS uses a variant on the basic theme, the SFW built by Diemaco of Canada. Although Diemaco was purchased by Colt and renamed Colt Canada, the Diemaco names and related firearms were kept.