| ammo_ldv=+3
| ammo_c1=68%
| ammo_c2=65%| ammo_c3=61%
| ammo_a1=54%
| ammo_a2=44%
'''5.56x45mm NATO''' is a type of [[ammunition]] for firearms. It is classified as a <span style="color:#AA0000">'''(R)'''</span>ifle caliber.
Before 5.56 NATOAt first, there was '''.223 Remington''', a civilian varmint hunting cartridge of identical dimensions which was originally designed for the Armalite AR-15, a semi-automatic rifle which gave birth to the [[Maze Customs|AR-15 platform]] and all related firearms. This cartridge formed the basis for the military cartridge that became known as '''5.56x45mm NATO'''. The cartridge started a trend of light, small-diameter, high-velocity rifle rounds, to allow for more ammunition per magazine and less recoil per shot. The trend was soon followed by [[5.45x39mm]] and [[5.8x42mm]], among others.
Despite differences in real life between the two cartridges (namely that 5.56 NATO is rated to develop roughly 13% more pressure than .223 Rem, therefore making it ''potentially unsafe'' to fire 5.56 in .223 Rem firearms), as far as the game is concerned they are not significant enough to merit including both cartridges separately. It is considered that ''Reduced Velocity''-brand 5.56x45mm NATO ammunition in the Mazes is roughly equivalent to .223 Remington.
== Base weapons ==
There are '''5170''' base weapons chambered in this caliber.
'''[[Class 1 weapons]]:'''
* [[Beretta AR70/90]]
* [[BMS Milcam HB]]
* [[Cadillac Gage Stoner 63A]]
* [[CETME Ameli]]
* [[Colt AR-15A2 R6550]]
* [[Colt M16A2]]
* [[Colt M16A4]]
* [[Colt M4]]
* [[Colt M4A1]]
* [[Česká Zbrojovka CZ-805 BREN A1]]
* [[Daewoo K2]]
* [[DIO KH2002 Sama]]
* [[Enfield RSAF L85A2]]
* [[Enfield RSAF L86A2 LSW]]
* [[FB Radom MSBS Grot C16]]
* [[FN Herstal F2000]]
* [[FN Herstal FNC]]
* [[GIAT FAMAS G1]]
* [[Heckler & Koch G36]]
* [[Heckler & Koch G36K]]
* [[Heckler & Koch G41]]
* [[Heckler & Koch HK33A2]]
* [[Heckler & Koch HK416]]
* [[Heckler & Koch XM8R]]
* [[Howa Type 89]]
* [[Howa Type 89F]]
* [[HS Produkt VHS-D2]]
* [[IMI Galil AR]]
* [[IMI Negev]]
* [[IWI Galil ACE 22]]
* [[IWI Galil ACE 23]]
* [[IZHMASH Kalashnikov AK-101]]
* [[IZHMASH Kalashnikov AK-12-3]]
* [[KAC Stoner 99 LMG]]
* [[Koncar-Arma APS-95]]
* [[LAPA FA-03]]
* [[Merkel B4]] (Caliber Mode 2)
* [[Merkel Drilling 96KS]] (Caliber Mode 2)
* [[SIG Arms SG550 Sniper]]
* [[SIG Arms SG551]]
* [[ST Kinetics SAR-21]]
* [[ST Kinetics Ultimax 100 Mk3]]
* [[Steyr AUG A1]]
* [[Steyr AUG HBAR]]
* [[Beretta ARX-160]]
* [[Colt Mark 18 mod 0]]
* [[Colt XM177E2 Commando]]
* [[FN Herstal SCAR-L CQC]]
* [[Heckler & Koch G36C]]
* [[Heckler & Koch HK53A3]]
* [[HS Produkt VHS-K2]]
* [[IMI Galil MAR]]
* [[IWI Galil ACE 21]]
* [[IWI Tavor X95]]
* [[IZHMASH Kalashnikov AK-102]]
* [[SIG Arms SG552 Commando]]
* [[SIG Sauer MCX Rattler]]
* [[Thales EF88 Austeyr]]
! Brand name !! Composition !! Available projectile types
|-
| Standard || Reg/SP || '''FMJ''' (1.0x)<br/><span style="color:#D1AE30">'''T'''</span> (1.1x)<br/> <span style="color:#888888">'''Match'''</span> (43.0x)<br/> <span style="color:#0000CC">'''JHP'''</span> (31.0x5x)<br/> <span style="color:#000088">'''JSP'''</span> (21.0x2x)<br/> <span style="color:#CC0000">'''AP'''</span> (31.0x5x)<br/><span style="color:#990000">'''SAP'''</span> (1.2x)<br/> <span style="color:#008800">'''SF'''</span> (1.5x2x)<br/> <span style="color:#7C7C00">'''UHS'''</span> (21.5x2x)
|-
| Reduced Velocity<br/>(.223 Remington) || Reg/'''-P''' || '''FMJ''' (0.9x)<br/> <span style="color:#0000CC">'''JHP'''</span> (21.7x35x)<br/> <span style="color:#000088">'''JSP'''</span> (1.8x08x)
|-
| Milsurp || '''Surp'''/SP || '''FMJ''' (0.25x)<br/><span style="color:#D1AE30">'''T'''</span> (0.275x)<br/> <span style="color:#CC0000">'''AP'''</span> (0.75x375x)<br/><span style="color:#990000">'''SAP'''</span> (0.3x)
|-
| Competition || '''Prem'''/SP || '''FMJ''' (3.0x)<br/> <span style="color:#888888">'''Match'''</span> (129.0x)
|}
{| class="wikitable" style="text-align:center;font-size:8pt" width="700"
|style="font-size:10pt" colspan=1112| Availability of '''{{PAGENAME}}''' as a Customs family chambering:
|-
| [[File:1911SS.png|noframe|50px]]<br/>1911SS || [[File:1911DS.png|noframe|50px]]<br/>1911DS || [[File:Blackhawk.png|noframe|50px]]<br/>Blackhawk || [[File:Redhawk.png|noframe|50px]]<br/>Redhawk || [[File:Glock-SF.png|noframe|50px]]<br/>Glock-SF || [[File:Glock-LF.png|noframe|50px]]<br/>Glock-LF || [[File:MP5.png|noframe|50px]]<br/>MP5 || [[File:AR-15.png|noframe|50px]]<br/>AR-15 || [[File:Ak.png|noframe|50px]]<br/>AK || [[File:AR-10.png|noframe|50px]]<br/>AR-10 || [[File:Rem700.png|noframe|50px]]<br/>Rem700 || [[File:BlackArrow.png|noframe|50px]]<br/>BA
|-
| [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:Yes_box.png|noframe|50px]] || [[File:Yes_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]] || [[File:Yes_box.png|noframe|50px]] || [[File:No_box.png|noframe|50px]]
|}
'''Minor services''': 10 custom weapons
* ''[[Enfield RSAF L85A2#Maze Customs|L85A2 Enhanced]]''
* ''[[DIO KH2002 Sama#Maze Customs|KH2002 Katiba]]''
* ''[[GIAT FAMAS G1#Maze Customs|FAMAS G2]]''
* ''[[Heckler & Koch G36#Maze Customs|G36 Enhanced]]''
* ''[[KBP OTs-14 Groza-1#Maze Customs|Groza-3, Groza-3 GL]]''
* ''[[Steyr AUG A1#Maze Customs|AUG A3 Enhanced]]''
* ''[[Steyr AUG HBAR#Maze Customs|AUG HBAR Enhanced]]''
* ''[[Thales EF88 Austeyr#Maze Customs|EF88 Austeyr FS, EF88 Austeyr GL]]''
[[Category:Ammunition]]