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
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
$94.30
Diamondback Firearms DB556C16MF50B8R M4 Contour 5.56x45 16in Nitride Barrel
Diamondback Firearms
$94.30
Diamondback Firearms 5.56 NATO 16" Carbine Length Barrel Black Nitride
Diamondback Firearms
$110.99
Diamondback Firearms DB556C16H50B8NYR 5.56 NATO 16in Carbine Barrel (No Threads)
Diamondback Firearms
$110.99
LWRCI M6IC Fluted Barrel (AR-15)
Lwrc International
$2,639.99
H&R M16A1 20in 5.56 NATO Pencil Barrel 1/2-28
Harrington & Richardson
$1,199.99
Palmetto State Armory Sabre 10.5in 5.56 NATO FN CHF CL Barrel w/ 10in Quad Rail FDE
Palmetto State Armory
$669.99
Bolt Carrier Groups
The heart of the AR action
Q Honey Badger Two-Piece BCG SCAR-Cut Stainless/Black Nitride
Q
$436.00
FailZero 009-FZAR15-01-NH AR-15 Bolt Carrier Group EXO Nickel Boron No Hammer
Failzero
$128.52
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
Rosco Manufacturing Rosco 556NATO / 300BLK Bolt Carrier Group Phosphate Finish
Rosco Manufacturing
$145.00
Kak Industry K-Spec Enhanced AR-15 BCG 5.56 NATO / 300 AAC Blackout Dual Ejector
KAK Industry
$155.97
R Guns BCGBLK556 5.56 AR-15 M16 Bolt Carrier Group (Black)
R Guns
$94.25
FailZero FZ AR-15 Bolt Carrier Group (BCG) No-Hammer - Black
Failzero
$142.49
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
$14.99
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
$11.60
Muzzle Devices
Flash hiders, brakes, and compensators
TacFire Shark Muzzle Brake 1/2x28 Thread .223/.556 Black
Tacfire
$29.49
BREEK Plan B Scorch 3-Prong Flash Hider .223/5.56 1/2x28 Nitride BRK4415
Breek Arms
$59.98
B&T Firearms Plan-B 5.56x45mm Flash Hider 5/8x24 Stainless 9" OAL
B&T
$121.98
XTS Phase 1 Modular Muzzle Brake Set 5.56 NATO 1/2x28 AR-15 (2-Piece)
Xts
$61.99
TRYBE Defense A2 Flash Hider AR-15 .223/5.56 Black Oxide
Trybe Defense
$8.62
Surefire SFCT-556-1/2-28 5.56 Closed-Tine Flash Hider 1/2x28
SureFire
$152.00
HKP HK416/G3 Flash Hider Threaded 15x1 RH (CA/NY Compliant)
Hkp Hk Parts
$15.91
HKP HK Linear Compensator 5/8x24 RH for 5.56/.223 and .308 (Black)
Hkp Hk Parts
$65.96
Unrivaled A2 Suppressor Adapter Siege Brake 1/2-28 5.56/.223
Unrivaled
$84.55
Glenfield Radial Muzzle Brake 1/2-28 (35 Caliber) 90809
Glenfield
$35.98
Ammunition
Cartridges chambered in this caliber
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack Ammunition
Winchester
$94.73
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack
Winchester
$266.44
Winchester 5.56x45mm 55 Grain FMJ Bulk Pack
Winchester
$501.53
Maxim MXM-49002 5.56 NATO 70gr TUI SBA 20/25 Ammunition
Maxim Defense
$25.46
Hornady Superformance 5.56x45mm CX 55gr Ammo 20 Round Box
Hornady
$34.79
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
$12.29
Prvi Partizan PPU Rangemaster 5.56x45 55gr FMJBT Ammunition 20 Rounds
Prvi Partizan
$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