5.56x45mm NATO
5.56 NATO
Standard AR-15 caliber, NATO military specification
Higher pressure than .223 Remington
Barrels
Rifled tubes that guide the projectile
White Label Armory WLA-BRL-4002 AR15 5.56 NATO 10.5" Government Profile Barrel
White Label Armory
$151.98
Spike's Tactical SB51606-ML 16" 5.56 NATO CHF Chrome-Lined AR-15 Barrel
Spikes Tactical
$301.98
Rosco Bloodline 12.5in 5.56 NATO 4150 CMV Nitride AR-15 Barrel BL-125-M4-556-7-C
Rosco Manufacturing
$157.98
FightLite Industries BBL006 MCR Complete Barrel Assembly 5.56 NATO 12.5in 1:7 Mag Phosphate
Fightlite Industries
$735.98
Faxon Duty Series 5.56 NATO 12.5" CMV Barrel Chrome Mag Phosphate 1/2-28
Faxon Firearms
$237.98
CMMG 55D590A AR-15 5.56 NATO 16.1" 416R Stainless Midlength Medium Taper Barrel
CMMG
$200.98
Andro Corp Industries Bravo-16 5.56 16" Tungsten Barrel
Andro Corp Industries
$488.24
Diamondback Firearms DB556P7H50B8R 5.56 NATO 7" Pistol-Length Barrel Black Nitride
Diamondback Firearms
$78.20
Diamondback Firearms 5.56 NATO 5.5 in Pistol Length Heavy Profile Barrel, Black Nitride
Diamondback Firearms
$80.50
Diamondback 5.56 16in Mid-Length Medium Profile Barrel Nitride Chrome Moly
Diamondback Firearms
$110.99
Bolt Carrier Groups
The heart of the AR action
Q Honey Badger Two-Piece BCG SCAR-Cut Stainless/Black Nitride
Q Llc
$500.00
White Label Armory WLA-BCG-3013-01 AR-15 BCG Rehab Kit 5.56 NATO Nitride
White Label Armory
$31.98
LANTAC M-SPEC 223/5.56 BCG Titanium Nitride (TiN) AR15 01-MSPEC-556-TIN-BCG
Lantac Usa
$212.98
FailZero FZ-AR15-01-SAH AR-15 Bolt Carrier Group w/ Semi-Auto Hammer EXO NiB
Failzero
$179.98
FailZero 009-FZAR15-01-NH AR-15 Bolt Carrier Group EXO Nickel Boron No Hammer
Failzero
$150.98
FailZero FZ-LW-BCG-01-NH Lightweight Low-Mass AR-15 Bolt Carrier Group
Failzero
$214.99
Aero Precision AR-15 BCG Nitride Bolt Carrier Group .223/5.56
Aero Precision
$149.99
San Tan Tactical Enhanced BCG Nitride Finish 5.56/.223 AR-15
San Tan Tactical
$200.00
San Tan Tactical AR-15 Enhanced BCG DLC Coated 5.56/.223
San Tan Tactical
$240.00
TacFire AR Solutions 5.56mm NATO Bolt Carrier Group (BCG) - Black Nitride
Tacfire
$84.99
Magazines
Feed devices for ammunition
FAB Defense Ultimag 5R 5-Round 5.56 AR-15 Polymer Magazine Blaze Orange
Fab Defense
$13.99
Lancer Systems L5AWM 20-Round Magazine .223/5.56/.300BLK Opaque Flat Dark Earth
Lancer Systems
$22.98
Lancer Systems L5AWM Hybrid Magazine 30rd Translucent Smoke .223/5.56/.300 BLK
Lancer Systems
$26.98
Lancer Systems L5AWM .223/5.56 5-Round AR-15 Magazine Opaque Black
Lancer Systems
$31.98
Amend2 MOD-A AR-15 15-Round Magazine 6mm ARC / 6.5 Grendel Black
Amend2
$23.98
Amend2 MODA AR-15 Magazine 6mm ARC / 6.5 Grendel 15rd Coyote Brown
Amend2
$23.98
Magpul MAG556ODG PMAG Gen M3 Window 30rd 5.56/.223 OD Green
Magpul
$18.00
Iver Johnson Arms AR-15 50-Round .223/5.56 Rifle Magazine Tan Sand AR1550TAN
Iver Johnson
$67.55
AC Unity AR-15 5.56mm/.223 40-Round Magazine
Ac-Unity
$5.99
THRIL PMX AR-15 Magazine 30rd 5.56 NATO Flat Dark Earth Polymer
Thril
$12.99
Muzzle Devices
Flash hiders, brakes, and compensators
TacFire Shark Muzzle Brake 1/2x28 Thread .223/.556 Black
Tacfire
$29.49
MDT Elite 223/6mm Muzzle Brake 1/2x28 Black Nitride Steel 103636BLK
Mdt Sporting Goods Inc
$137.98
Griffin Armament Minimalist Taper Mount Flash Suppressor TMMFH1228 1/2-28 Black
Griffin Armament
$86.98
BREEK Plan B Scorch 3-Prong Flash Hider .223/5.56 1/2x28 Nitride BRK4415
Breek
$59.98
B&T Firearms Plan-B 5.56x45mm Flash Hider 5/8x24 Stainless 9" OAL
T/C Firearms
$121.98
Anderson Knight Stalker Flash Hider 1/2-28 5.56 NATO
Anderson Manufacturing
$32.98
American Precision Arms Gen 4 Little Bastard Self-Timing Muzzle Brake 30 Cal Stainless
American Precision Arms
$218.98
Ultradyne Athena Linear Compensator AR-15 223/5.56 1/2x28 Thread
Ultradyne
$68.99
Ultradyne Apollo LR Compensator 30 Caliber 5/8x24 Thread Pitch
Ultradyne
$157.49
Luth-AR AR-15 A1 3-Prong Compensator .223/5.56 1/2-28 Black Chrome Moly
Luth-AR
$12.49
Ammunition
Cartridges chambered in this caliber
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack Ammunition
Winchester
$84.76
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack
Winchester
$241.87
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack
Winchester
$461.23
Maxim MXM-49002 5.56 NATO 70gr TUI SBA 20/25 Ammunition
Maxim Defense
$27.66
Hornady Superformance 5.56x45mm CX 55gr Ammo 20 Round Box
Hornady
$34.99
Fort Scott Munitions Tumble Upon Impact 5.56 NATO 62gr SBS Ammunition
Fort Scott Munitions
$26.99
Federal American Eagle Rifle Ammunition 5.56x45 55gr FMJ
Federal Ordnance
$11.39
Prvi Partizan PPU Rangemaster 5.56x45 55gr FMJBT Ammunition 20 Rounds
Ppu
$11.99
Hyperion Veteran M855 5.56 NATO 62gr FMJ Ammo
Hyperion Munitions
$39.99
Igman 556 M193 5.56x45mm NATO FMJ 55gr Ammo
Igman
$13.99