M27 link

The M27 link, formally Link, Cartridge, Metallic Belt, 5.56mm, M27 is a disintegrating metallic bullet link issued by the United States armed forces and designed for use in belt-fed firearms. It holds 5.56×45mm NATO ammunition. It was first developed for the Stoner belt-fed Machine Gun in Vietnam but was later resurrected and adapted for use with the FN Minimi LMG / M249 SAW. It is a scaled-down version of the M13 link.

Each link consists of a single piece of metal curved into two partial cylinders, into which adjacent rounds slide. Like the M13 link, the M27 link is a push-through design. Rounds are extracted by pushing forward out of the link. With the round freed, the link disintegrates (detaches from the belt) and is ejected. This is in contrast with older belt systems which were typically made of fabric and were fed straight through the weapon without disintegrating.

The links can be collected and reassembled by hand with fresh ammunition, but in practice this is not commonly done as it is labor-intensive, and the inexpensive links are considered disposable.

M27

M27, M.27 or M-27 may refer to:

In science

In firearms and military equipment

In transportation

List of bus routes in Manhattan

The Metropolitan Transportation Authority (MTA) operates a number of bus routes in Manhattan, New York, United States. Many of them are the direct descendants of streetcar lines (see list of streetcar lines in Manhattan).

Companies

Presently, the New York City Transit Authority and its subsidiary Manhattan and Bronx Surface Transit Operating Authority operate most local buses in Manhattan. The Roosevelt Island Operating Corporation operates the Roosevelt Island Red Bus Service on Roosevelt Island.

The first bus company in Manhattan was the Fifth Avenue Coach Company, which began operating the Fifth Avenue Line (now the M1 route) in 1886. When New York Railways began abandoning several streetcar lines in 1919, the replacement bus routes (including the current M21 and M22 routes) were picked up by the New York City Department of Plant and Structures (DP&S). The DP&S began operating several other buses (including the current M79 and M96 routes) in 1921. All of these but the M21 were acquired by Green Bus Lines in 1933; Green transferred several of these to the Comprehensive Omnibus Corporation in 1935.