Some of the actors, extras, and stuntmen, portraying Delta Force operators in the film, are equipped with the Colt Model 727 Carbine (which was marketed by Colt as the "M16A2 Carbine"). The official United States Government designation for the carbine is CARBINE, 5.56 MILLIMETER (NSN 1005-01-376-7245). The carbine is identified by having an "A2" upper receiver and a 14.5-inch barrel with the "M203 cut" (sometimes called a "step"). The Model 727 carbine was actually utilized, by BOTH operators and Rangers, during Operation Gothic Serpent.
In the film, most of the Model 727 carbines are anachronistically equipped with Aimpoint M68 CCO reflex sights (which was not standardized until 17 March 1995). During Operation Gothic Serpent, some operators and Rangers utilized the Aimpoint 5000 reflex sight.
Colt Model 733 Commando
Some of the actors, extras, and stuntment, portraying both Delta Force operators and United States Army Rangers in the film, are equipped with the Colt Model 733 Commando. The Model 733 was marketed by Colt as the "M16A2 Commando". Colt has historically assigned the "Commando" designation to it's 5.56mm rifles that featured either 10-inch or 11.5-inch barrels. The Model 733 Commando is identified by having an "A2" upper receiver and a 11.5-inch barrel.
At least two (2) of the Model 733 Commandos that appear in the film have had their "A2" flash suppressors replaced with replica "slip over" XM177-series sound/flash moderators. With the "slip over" flash hider in place it gives the Model 733 Commandos the appearance of having 10-inch barrels, when in fact they have 11.5-inch barrels. One is unpainted while the second is camouflage painted. It has been alleged that the camouflaged version bears a close resemblance to the modified Model 733 Commando that appears in Blood Diamond (the allegation had been made due to the weapons being supplied by the same company in both films).
Colt M4 Carbine
A number of rubber stunt prop copies of the Colt M4 Carbine anachronistically appear in the film. NO actual "firing" M4 Carbines appear in the film. One of the most predominant appearances of the stunt M4 Carbines is during the infamous "This is my safety." scene. The rubber stunt M4 carbines were molded from a Colt Model AR-15A2 Gov't Carbine (Colt Model Number 6520) lower receiver with a M4 Carbine (detachable carrying handled mounted in place and 14.5-inch "M203 cut" barrel) upper receiver attached.
Most of the stunt M4 Carbines that appear are black, while the one utilized by Eric Bana, during the above mentioned scene, has a matching camouflage paint scheme to that of the Model 727 carbine Bana utilizes during the rest of the film.
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M16A2 Rifle
Most of the Rangers, including SSG Matt Eversmann (Josh Hartnett) are armed with M16A2 rifles. While defending the second Black Hawk crash site, SFC Randy Shughart (Johnny Strong) can be seen briefly using an M16A2, alongside his M14. Also, when CPT Steele tells SSG Eversmann that they have to secure the perimeter for the SAR chopper the Ranger lying prone in the background appears to be working the forward assist on his M16A2.
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M14 Rifle
The M14 rifle is seen being used by Delta Force Sergeant First Class Randy Shughart (Johnny Strong), most notably when he and MSG Gary Gordon (Nikolaj Coster-Waldau) are covering the second crash site. His M14 sports a camouflage paint scheme and an Aimpoint CompM2/M68 reflex sight.
M16A1
M16A1 rifles are seen in the Somali arms dealer's shop and one militia member is seen loading up one. At one point, Rangers can be seen watching a portion of the film The Jerk where a madman is trying to shoot the protagonist using a scoped M16A1.
CETME
Spanish CETME rifles are seen among the weapons in the arms dealer's shop, many of which are taken by the militia to combat the U.S. forces. They are not Heckler & Koch G3s, most notably because they have a simple fixed sight instead of a rear sight spindle.
Heckler & Koch G3A3
The local militia arm themselves with, among many other weapons, actual Heckler & Koch G3A3 assault rifles.
Norinco Type 56
A full stock Norinco Type 56 is used by a Somali to whack Mike Durant in the head. It has a slanted AKM syle muzzle brake added on.
Norinco Type 56-1
Nearly all of the Somali gunmen are armed with the Norinco Type 56-1 assault rifle, which is a Chinese derivative of the AKS-47/AKMS. They are identified by the hooded front sights, which only Chinese Kalashnikov rifles have. At one point in the film, one of the soldiers can be seen removing the magazine from a discarded Type 56-1 and stuffing it in an empty pouch. Whether this was done to take back a souvenir or for some other reason is not known.
AKS-74U
Mo'alim (Razaaq Adoti), the Somali militia leader, carries an AKS-74U as his weapon of choice, first seen picking it up and inspecting it before heading into battle, then firing a burst into the air to break up the mob attacking CWO3 Mike Durant before announcing that he was to be taken alive as a prisoner.
Sniper Rifles
SVD Dragunov
When Hoot (Eric Bana) is in the Somali town, he passes the arms dealer, who has an SVD Dragunov on display.
Machine Guns
M60 machine gun
Ranger Specialist Shawn Nelson (Ewen Bremner) can be seen carrying an M60 machine gun as his standard weapon. A mounted M60 is also seen and fired from at least one of the Humvees in the extraction convoy. Some of the Somalis can be seen using them as well.
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FN Minimi
Several Rangers can be seen carrying FN Minimis throughout the film, standing in for the M249-E1 SAW. It is also the weapon used by Specialist Lance Twombly (Tom Hardy) to accidentally deafen Nelson when he fires it too close to his head. The Minimis are also fitted with circular 200-round cloth ammo bags instead of hard plastic drums. At one point a Somali shoots at Twombly and hits one of his ammo drums causing the ammo to cook off and burn him, though he's able to get rid of it before he's seriously harmed.
Browning M2HB
The Browning M2HB heavy machine gun is fielded by the US Army on their HMMWVs, the U.N. forces on their APCs, and the Somali militia on their technicals in the film. The opening shots of the film feature Somali militiamen slaughtering a gathered crowd at a food distribution center with the powerful .50 cal.
General Dynamics GAU-17/A
The MH-60 Black Hawks in the film are armed with General Dynamics GAU-17/A miniguns mounted as doorguns. Pylon-mounted miniguns, mounted alongside 2.75 rockets, are seen as the armament of by the AH-6 Little Birds.
DShK Heavy Machine Gun
Several vehicle mounted Russian DShK heavy machine guns appear in several scenes of the film.
Zastava M72B1
One of the Somalis fires on Mike Durant's Black Hawk armed with an Zastava M72B1, a copy of the RPK light machine gun, identifiable by the stock and handguard design. Another Somali is seen providing suppressing fire on the Rangers and Delta operatives with one when the Delta operators and Rangers try to reach the first Black Hawk crash site.
PKM Light Machine Gun
A PKM light machine gun is seen resting on a table in the Somali arms dealer's shop.
Submachine Guns
Heckler & Koch MP5A3
Chief Warrant Officer 3 Michael Durant (Ron Eldard), the MH-60 Black Hawk pilot of Super Six-Four, is armed with a Heckler & Koch MP5A3 with a slim handgrip and uses it to defend himself after he's shot down. The MP5 was briefly issued to helicopter crews as a personal defense weapon (PDW), but was discontinued in this role when it was determined its 9x19mm ammo lacked sufficient stopping power against armor-wearing or drug-crazed enemies, as was the case in Somalia. The guns is also briefly used by SFC Randy Shughart before being killed by the overwhelming militia.
In the book and real life, the weapons were actually MP5Ks. They were referred to as "Skinny Popper", a reference to the men's nickname for the Somalis.
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Shotguns
Remington 870
While never used on screen, SFC Sanderson (William Fichtner) can be seen with a customized Remington 870 Express Magnum (standing in for an 870 Police Magnum) slung over his right shoulder. A pistol grip (minus the folding stock) is used in place of the full stock. This same setup is used on a short 870 by Charlie Sheen in the movie Navy SEALs. In a deleted scene, SFC Sanderson uses the shotgun to blow the hinges on a door inside the target building. The tail end of this shot is still in the finished movie, although if you haven't seen the deleted scene before it would be hard to spot. In the book, at least one of the Delta operators has an 870 Masterkey attached to his CAR-15.
Handguns
M1911A1
We see the M1911A1 pistol in the hands of the Delta operators as their sidearm of choice. As the two Delta snipers attempt to secure the second crash site they are forced to draw their M1911A1 pistols as the overwhelming Somali forces close in on them. Delta Force MSG Wex (Kim Coates) can be seen at the firing range with an M1911A1 near the beginning of the film.
Tokarev TT-33
A Somali militiaman uses a Tokarev TT-33 to kill SFC Shughart (Johnny Strong) at the second crash site. It should be noted that the militiaman fires 11 shots, which is 3 more than the TT-33's 8-round magazine.
Beretta 92FS
The Beretta 92FS pistol (standing in for the M9) is seen a few times in the film in the hands of Rangers, and members of Lieutenant Colonel McKnight's convoy. Mainly it is seen in the hands of Maddox in the Humvee. McKnight himself carries his 92FS sidearm around as a proper means to defend himself.
Launchers
RPG-7
The Russian manufactured RPG-7 features prominently in the film as the weapon which brings down a pair of UH-60 Black Hawk helicopters. In one scene inspired by an actual event, a projectile from an RPG-7 strikes PVT. Kowalewski (Brendan Sexton III), the driver of one of the M35 deuce and a half trucks in Lieutenant Colonel Danny McKnight (Tom Sizemore)'s convoy and fails to detonate, impaling the luckless soldier instead.
Norinco Type 69 RPG
Along with the RPG-7s mentioned above, Chinese Norinco Type 69 RPG launchers are also used by the militia. The Type 69's also seem to be loaded with PG-7VL rockets instead of the more commonly-seen PG-7VM rockets, distinguished by the larger warhead.
M72 LAW
An Army Ranger, Lieutenant Tom DiTomasso, can be seen taking out a "technical" with an M72A3. The M72A3 was a Post Vietnam improved model of the M72 Rocket, and the last variation used by the U.S. Army. Upgrade versions (up to M72A7) of the LAW are being fielded by the U.S. Navy and USMC as recently as 2007, as well a variant is used by the Canadian Forces and other NATO nations in Afghanistan.
SPG-9 Recoilless Rifle
At one point in the film, Aidid's militia begin to bombard the building the majority of the Rangers and Deltas have taken cover in with mortars and an SPG-9 recoilless rifle. A group of Deltas led by Hoot soon kill the gunners and then turn the weapon against the militia, killing several with one shot. It's later destroyed by Hoot's team before they join Eversmann's team. Also interesting to note, according to the audio commentary on the DVD, this incident never happened & was made up for dramatic effect by the writers.
While the Cobray CM203 37mm launchers are fitted on most of the Ranger's M16A2 rifles, a couple of actual M203 grenade launchers attached to M16A2s are seen, the most notable of which is Specialist John Grimes (Ewan McGregor) who assists Delta in taking out a technical that has them pinned down, missing the first shot before destroying the vehicle with a High-Explosive Dual-Purpose (HEDP) grenade from his M203.
Grenades
M67 Hand Grenade
While loading up for the assault, Hoot (Eric Bana) is seen taping up the pins and spoons on some M67 fragmentation hand grenades. SFC Sanderson is later seen throwing one into a window to take out a Somali who has him and the Deltas and Rangers pinned down.
AN/M14 Incendiary Grenade
There are several appearances in the film of AN/M14 incendiary grenades; used by Deltas to destroy sensitive equipment at both Black Hawk crash sites, as well as to destroy the SPG-9 recoilless rifle mentioned above once Hoot and his team are done with it. Another one can be seen sitting on a table when Hoot is loading up.