M4 carbine

The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle. The M4 is a 5.56×45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine. It has a 14.5 in (370 mm) barrel and a telescoping stock.

The M4 carbine is heavily used by the United States Armed Forces and is replacing the M16 rifle in most United States Army and United States Marine Corps combat units as the primary infantry weapon.

The M4 is also capable of mounting the M203 grenade launcher. The distinctive step in their barrel is for mounting the M203 with the standard hardware. The M4 is capable of firing in semi-automatic and three-round burst (like the M16A2 and M16A4), while the M4A1 is capable of firing in semi-auto and full automatic (like the M16A1 and M16A3).

History

Following the adoption of the M16 rifle, carbine variants were also adopted for close quarters operations. The CAR-15 family of weapons served through the Vietnam War. However, these carbines had design issues, as "the barrel length was halved" to 10 inches which "upset the ballistics", reducing its range and accuracy and "led to considerable muzzle flash and blast, so that a large flash suppressor had to be fitted". "Nevertheless, as a short-range weapon it is quite adequate and thus, (despite) its caliber, (the XM177 "Commando") is classed as a submachine gun." In 1988, Colt began work on a new carbine design called the XM4 combining the best features of the Colt Commando and M16A2 rifles.

M4

M4, m4, M04, or M-4 may refer to:

In biology and medicine

In electronics and computing

Firearms and military equipment

Guns and cannons

Military vehicles

M-10 (Michigan highway)

M-10 is a state trunkline highway in the Metro Detroit area of Michigan in the United States. The southernmost portion follows Jefferson Avenue in downtown Detroit, and the southern terminus is at the intersection of Jefferson and M-3 (Randolph Street) next to the entrance to the Detroit–Windsor Tunnel. The northern terminus is in West Bloomfield Township at the intersection with Orchard Lake Road. The highway has several names as it runs through residential and commercial areas of the west side of Detroit and into the suburb of Southfield. It is called the John C. Lodge Freeway, The Lodge, James Couzens Highway and Northwestern Highway.

M-10 was built in segments through the late 1950s and early 1960s. It carried several different names before the entire route was finally officially named the John C. Lodge Freeway in 1987. The freeway has carried a few other highway designations. The southern segment was part of US Highway 12 (US 12) and the whole thing was later renumbered Business Spur Interstate 696 (BS I-696). From 1970 until 1986, it was part of US 10, and the freeway has been M-10 since. The non-freeway segment that runs between I-696 in Southfield and Orchard Lake Road was previously numbered M-4. M-10 was named after John C. Lodge, an influential Detroiter and Mayor of Detroit from 1927–28.

M-4 (Michigan highway)

M-4, was formerly the designation of two different routes in the US state of Michigan.