Editing M2 Browning (section)

====M45 Quadmount====
{{Main|M45 Quadmount}}
[[File:Multiple Gun Motor Carriage.jpg|thumb|An M45 Quadmount installed on an [[M16 Multiple Gun Motor Carriage]]]]

The M45 Quadmount was a mounting of four .50 M2HB guns with a single gunner situated behind an armored housing. This was used by U.S. anti-air battalions, fitted either on a towed trailer or mounted on a half-track carrier. With 200 rounds per gun in a powered tracking mount, the guns proved very effective against low-flying aircraft. The use of four guns adequately compensated for the fact that the individual M2HB's rate of fire (450–550 rounds per minute) was low for an effective anti-aircraft weapon.<ref name="RottmanBrowning">{{cite book |url=https://books.google.com/books?id=TaixfxwdCwEC&pg=PA20 |last=Rottman |first=Gordon L. |date=2010 |title=Browning .50-Caliber Machine Guns |publisher=Osprey Publishing |pages=19–20 |isbn=978-1-84908-331-7}}</ref>

Towards the end of the war, as [[Luftwaffe]] attacks became less frequent, the quad .50 (nicknamed the ''Meat Chopper'' or ''Krautmower''<ref name="RottmanBrowning" />) was increasingly used in an anti-personnel role, similarly to the earlier-introduced (1940) and more powerful—but much more difficult to keep well-fed with ammunition when in action—German 20&nbsp;mm [[FlaK 30#2 cm Flakvierling 38 |Flakvierling]]. Snipers firing from trees were engaged by the quad gunner at trunk level; the weapon would cut down and destroy the entire tree, and the sniper with it.<ref name="Henry, Mark R. 2000 p. 20"/><ref name="Article">{{cite web |url=http://www.skylighters.org/quad50/index.html |title=AAA Weapons of the U.S. Army, Part I: The "Quad 50" Machine Gun Mount |website=225th AAA Searchlight Battalion (Skylighters) |url-status=dead |archive-url=https://web.archive.org/web/20081222001357/http://www.skylighters.org/quad50/index.html |archive-date=2008-12-22}}</ref>

The M45 Quadmount was still in use during the Vietnam War.