Advanced Colt Carbine-Monolithic

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The Colt's Manufacturing Company Advanced Colt Carbine-Monolithic is an improved version of the M4 carbine presented to the United States military at a conference as a possible replacement for the M16 rifle and M4 carbine within the military.

Design

The Colt ACC-M (Advanced Colt Carbine-Monolithic) adds Colt's proprietary, monolithic Mil-Std-1913 rail system (quad rail) forward hand guard to the normal M4 carbine upper receiver.

Colt M4 Carbines and Colt M4A1 Carbines can be easily and relatively inexpensively modified/upgraded into ACC-Ms by replacing the upper receiver, which is more cost-effective than completely replacing the weapons with a whole new carbine with a different control layout and different overall ergonomics and handling characteristics that require new and different training and maintenance protocols.

New-made ACC-Ms carry the model numbers "R0922" (S-1-3) and "R0923" (S-1-F). There is also a version of the R0923 with an 11.5" (Colt Commando) barrel known as the "R0923CQB."

External links

Colt Defense's ACC-M page
Colt Defense's M4 Commando and R0923CQB page

ArmaLite AR-10 derivatives

Direct gas impingement

Battle rifles

Standard	ArmaLite AR-10
Sniper rifles	Colt Canada C20 DMR L129A1 M110 Semi-Automatic Sniper System M110A1 Rifle Marine Scout Sniper Rifle Sako M23 SR-25 Zbroyar Z-10

Rifles

Standard	ArmaLite AR-15 M4-WAC-47 M16 rifle variants CMMG Mk47 Mutant Colt ACR Colt CM901 Colt Canada C7 Colt IAR Barrett M468 KH-2002 KS-1 La France M16K LMT MARS-L LR-300 Mk 12 Special Purpose Rifle Norinco CQ Remington R4 Safir T-series SEAL Recon Rifle Squad Advanced Marksman Rifle Squad Designated Marksman Rifle
Carbines	Carbon 15 CAR-15 M4 carbine Bushmaster M4-type Carbine Colt Canada C8 Close Quarters Battle Receiver Olympic Arms OA-93

PDWs

Machine guns

Colt Automatic Rifle

Semi-automatic rifles

Shotguns

Pistols

Other mechanism of action

Battle rifles

Standard	Heckler & Koch HK417 MKE MPT-76
Sniper rifles	LWRC REPR LWRC SABR MKE KNT-76

Rifles

Standard	CAR 816 Colt Advanced Piston Carbine Adcor A-556 Barrett REC7 Haenel MK 556 Heckler & Koch HK416 LWRC M6 M231 Firing Port Weapon MKE MPT-55 Pindad AM1 PVAR Remington R5 RGP SOCIMI AR-831 T65 T86 T91
Carbines	G13 carbine MKE KAAN-717 SIG516 Special Operations Assault Rifle SIG MCX

Submachine guns

Machine guns

Semi-automatic rifles

Centrefire	Heckler & Koch MR223 Heckler & Koch MR308 Ruger SR-556 SIG Sauer SIGM400
Rimfire	Smith & Wesson M&P15-22

Pistols

LWRC PSD

Colt's Manufacturing Company

Revolvers

19th century	Paterson Walker Pocket Percussion Dragoon M1851 Navy Model 1855 M1860 Army M1861 Navy Open Top Open Top Pocket Model House revolver Single Action Army New Line M1877 M1878 M1889 M1892
20th century	New Police Model 1905 New Service Official Police Police Positive Police Positive Special M1917 Revolver FitzGerald Special Detective Special Buntline Trooper Cobra Python Diamondback King Cobra Anaconda

Semi-automatic
pistols

SMGs, PDWs

Rifles

Machine guns

Shotguns,
Derringers, misc.

Cartridges

Revolver	.32 Long Colt .38 Short Colt .38 Long Colt .41 Short Colt .41 Long Colt .44 Colt .45 Colt
Semi-automatic pistol	ACP (Automatic Colt Pistol) .25 ACP .32 ACP .380 ACP .38 ACP .45 ACP