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
LWRCI M6IC Fluted Barrel (AR-15)
Lwrci
$2,639.99
H&R M16A1 20in 5.56 NATO Pencil Barrel 1/2-28
Harrington & Richardson
$1,199.99
Ballistic Advantage Premium Series BA Hanson Profile 16" AR-15 Threaded Barrel 5.56 NATO Mid-Length 4150 QPQ Black
Ballistic Advantage
$175.77
PSA Sabre 10.5in 5.56 NATO FN CHF Chrome Moly Barrel w/ 10in QD Rail
Palmetto State Armory
$669.99
PSA PA-15 11.5in Classic AR-15 Pistol Barrel 5.56 NATO 1:7 Phosphate BTR
Palmetto State Armory
$549.99
FN AR-15 16" Carbine Barrel 5.56 Chrome-Lined Manganese Phosphate
Fn
$231.99
FN 14.7in AR-15 M4 Carbine Chrome-Lined Barrel, 5.56
Fn
$231.99
FN 14.7 in M4 Carbine AR-15 5.56 NATO Chrome Lined Barrel
Fn
$292.99
Rosco Husky 5.56 NATO 10.30in Chrome Lined Phosphate 4150 CMV Barrel - HSK-103-SOC-556-7-C-CL
Rosco Manufacturing
$160.98
Rosco Stray Dog 16in 5.56 NATO Barrel 4150 CMV Black Phosphate CL-16.25-556-7-M
Rosco Manufacturing
$167.98
Bolt Carrier Groups
The heart of the AR action
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
SOLGW SCALPER Bolt Carrier Group for AR-15 5.56 NATO / .223 Remington
Sons Of Liberty Gun Works
$187.13
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
$194.99
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
$144.48
CMMG 55BA457 M16 Bolt Carrier Group AR-15 Bolt Assembly
Cmmg
$62.92
Battle Arms Development BADEBCB Bolt Carrier Group Kit Enhanced Black Stainless Steel
Battle Arms Development Inc.
$34.18
Magazines
Feed devices for ammunition
Magpul PMAG AR/M4 Gen M3 Window 30-Round .223/5.56 Black Magazine
Magpul
$17.50
Magpul MAG556-MCT PMAG Gen M3 30rd .223/5.56 Window Magazine
Magpul
$160.00
Pro Mag AR-15 5.56mm 65-Round Drum Magazine FDE
Pro-Mag
$77.99
Lancer L5AWM Gen 2 .223/5.56 30-Round AR Magazine Translucent Clear
Lancer
$21.99
Lancer L5AWM Gen 2 .223/5.56 AR-15 Magazine 15rd Black
Lancer
$25.99
Lancer L5AWM Gen 2 30-Round Translucent UDE AR-15 Magazine .223/5.56
Lancer
$27.99
Lancer L5AWM Gen 2 223/5.56 30rd Magazine Translucent Green
Lancer
$21.99
Lancer L5AWM Gen2 30rd AR-15 Magazine .223 Rem/5.56 TDE
Lancer
$21.99
Lancer L5AWM Gen 2 .223 Rem 5.56 NATO 20rd Translucent Dark Earth Mag
Lancer
$20.99
Lancer L5AWM Gen 2 5.56x45mm NATO 20-Round Magazine FDE
Lancer
$19.99
Muzzle Devices
Flash hiders, brakes, and compensators
HKP HK416/G3 Flash Hider Threaded 15x1 RH (CA/NY Compliant)
Hkp Hk Parts
$24.95
HKP HK Linear Compensator 5/8x24 RH for 5.56/.223 and .308 (Black)
Hkp Hk Parts
$87.95
Glenfield Radial Muzzle Brake 1/2-28 (35 Caliber) 90809
Glenfield
$35.98
Ultradyne Pulse 5.56 Pulse Compensator 1/2x28
Ultradyne
$74.49
Rearden FHD Flash Hider 1/2-28 Square Shoulder Black Nitride
Rearden
$59.22
B&T Assault Open Tine 3 Prg 5.56 NATO Flash Hider (1/2x28) - BT-Assault-3P
B&T
$83.20
VKTR Plan B Compatible Flash Hiders 1/2x28 Black Nitride
Vktr Industries
$74.99
YHM SRX Short QD Muzzle Brake 5/8-24 with HUB Interface 1-3/8x24
Yhm
$84.75
Yankee Hill 26MBA Slant Muzzle Brake 5.56 NATO 1/2-28 Black Steel 2.50" OAL
Yankee Hill Machine
$74.75
Yankee Hill Machine 430228A QD Light Tactical Flash Hider 1/2-28
Yankee Hill Machine
$99.75
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
$26.68
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
$11.59
Prvi Partizan PPU Rangemaster 5.56x45 55gr FMJBT Ammunition 20 Rounds
Ppu
$11.99
PMC X-TAC 5.56 NATO 55gr FMJ Boat Tail - Case of 200 Rounds
Pmc
$10.03
Hyperion Veteran M855 5.56 NATO 62gr FMJ Ammo
Hyperion Munitions
$39.99