Bushmaster XM-15

Bushmaster XM-15
Bushmaster XM15-E2S M4 Style Carbine
Type	Semi-automatic rifle/carbine/pistol
Place of origin	United States
Production history
Manufacturer	Bushmaster Firearms International
Specifications
Weight	8.27 lb (3.75 kg) (20" barrel, without magazine)
Length	38.25 in (97.2 cm) (20" barrel)
Barrel length	20 in (51 cm) (rifle), 16 in (41 cm) (carbine)
Caliber	.223 Remington / 5.56×45mm NATO
Action	Gas operated, direct impingement
Rate of fire	Maximum effective rate 45 rounds per minute (semi-auto)
Muzzle velocity	3,260 feet per second (990 m/s)
Effective firing range	600 yards (550 m)
Maximum firing range	3,865 yards (3,534 m)
Feed system	STANAG magazines, typical capacity 30 rounds
Sights	A2-style front post and rear aperture iron sights on older models, MIL-STD-1913 rails on all 2016 production models

The Bushmaster XM-15 series (formerly styled as XM15) is a line of AR-15-pattern semi-automatic rifles, carbines, and pistols manufactured by Bushmaster Firearms International. Variants include the Bushmaster M4-type Carbine, Patrolman series, QRC series, Bushmaster XM15-E2S and the Carbon 15 line.

The standard XM-15 has a forged 7075T6 aircraft-grade aluminum upper and lower receiver. Barrels of XM-15 firearms have a heavy profile and are hard chrome-lined 4150 alloy steel or 416 stainless steel. In Bushmaster's 2016 sales brochure, all new-production XM-15s are stated to be supplied with a 4150 steel barrel. The standard barrel has rifling of 1 turn in 9".

The basic E2S is fitted with a 16-inch carbine-style barrel.

E2S Target - 20" heavy-barrel target rifle with A2-style stock and carry handle upper, also available with 24" and 26" barrels.

E2S V-Match - Target variant with an anodized aluminum handguard, flat-top receiver and 20, 24 or 26-inch barrel.

E2S V-Match Carbine - As above, but with a 16-inch carbine barrel.

E2S Shorty - 16-inch version with a "shorty" handguard.

E2S Shorty AK - Shorty variant with 14.5-inch carbine SBR barrel with an AK-74-style muzzle brake permanently welded to the end to increase the overall length to 16 inches.

E2S Dissipator - Variant with a Bushmaster-designed 16-inch "Dissipator" barrel. This mounts a false gas block with a front sight at the 20" position with the real gas block in the carbine position and concealed under a rifle-length 12" handguard.

Formerly known as ORC ("optics ready carbine") but now styled as QRC ("quick response carbine"), these are flat-top rifles without iron sights, provided with a simple 1x20 red-dot optic.

Patrolman's Pistol - 7" or 10.5" barrel "pistol" version with a free-float handguard and no stock. Also available as a military or LE select-fire version.

The Bushmaster XM-15 E2s "M4 type" carbine gained notoriety for its use in the October 2002 Beltway sniper attacks, according to Colt Defense. It is infamous for being designed to avoid the 1994 Federal Assault Weapons Ban.