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5.56x45 Flat Base AR Parts

1-24 of 45 Products
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Tacfire 5.56x45mm 10.5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-10

Tacfire 5.56x45mm 10.5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-10
$319 14
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CMMG S5CA642 Zeroed Lower Parts Kit Black Grip, Ambi Safety & Mag Catch, Mil-Spec Trigger, Fits AR-Platform/Mk4

CMMG S5CA642 Zeroed Lower Parts Kit Black Grip, Ambi Safety & Mag Catch, Mil-Spec Trigger, Fits AR-Platform/Mk4

$99 08
In Stock
TacFire BU-556-7 AR-15 Complete Upper, 5.56x45mm NATO, 7" Black Nitride Barrel, Black Anodized Finish

TacFire BU-556-7 AR-15 Complete Upper, 5.56x45mm NATO, 7" Black Nitride Barrel, Black Anodized Finish
$279 99
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HuxWrx Safety Co. QD 556 Muzzle Brake 1599 Black with 1/2"-28 tpi Threads, 2.30" OAL, 5.56x45mm NATO AR-Platform

HuxWrx Safety Co. QD 556 Muzzle Brake 1599 Black with 1/2"-28 tpi Threads, 2.30" OAL, 5.56x45mm NATO AR-Platform

$143 00
In Stock
Tacfire AR-15 Pistol Kit 5.56x45mm 7.5" Barrel - PK556-LPK-7

Tacfire AR-15 Pistol Kit 5.56x45mm 7.5" Barrel - PK556-LPK-7
$299 99 $349.99
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Rosco Manufacturing K9 11.5" 5.56 NATO Nitride 416R Stainless Barrel for AR-15

Rosco Manufacturing K9 11.5" 5.56 NATO Nitride 416R Stainless Barrel for AR-15

$180 00
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Rosco Manufacturing Husky 12.5" 5.56 NATO Chrome Lined Phosphate 4150 CMV Barrel, AR-15 Compatible

Rosco Manufacturing Husky 12.5" 5.56 NATO Chrome Lined Phosphate 4150 CMV Barrel, AR-15 Compatible

$185 40
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Lead & Steel LS556PEN-MID-13.9 5.56mm 13.9" 4150 Nitride AR15 Barrel

Lead & Steel LS556PEN-MID-13.9 5.56mm 13.9" 4150 Nitride AR15 Barrel

$99 89
In Stock
Cobalt Kinetics CKRCB6556 RCB-6 5.56x45mm NATO Rifle Muzzle Device

Cobalt Kinetics CKRCB6556 RCB-6 5.56x45mm NATO Rifle Muzzle Device

$104 76
In Stock
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Cobalt Kinetics CK-Pro URG AR-15 Compatible 5.56 NATO 13.7" Barrel Black Cerakote Finish

Cobalt Kinetics CK-Pro URG AR-15 Compatible 5.56 NATO 13.7" Barrel Black Cerakote Finish

$775 99
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Rosco Manufacturing Bloodline BL-16-M4-556-7-C 16" 5.56 NATO Nitride 4150 CMV Barrel for AR-15 M4

Rosco Manufacturing Bloodline BL-16-M4-556-7-C 16" 5.56 NATO Nitride 4150 CMV Barrel for AR-15 M4

$152 10
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Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 16" Black Cerakote Upper Receiver Group - CKPROURG55616BBLK

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 16" Black Cerakote Upper Receiver Group - CKPROURG55616BBLK

$1230 35
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Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 14.50" Black Cerakote Upper Receiver Group - CKPROURG556145BLK

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 14.50" Black Cerakote Upper Receiver Group - CKPROURG556145BLK

$1230 35
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Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 13.70" Black Cerakote Upper Receiver Group - CKPROURG556137BLK

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 13.70" Black Cerakote Upper Receiver Group - CKPROURG556137BLK

$1230 35
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Fightlite Industries MCR060M Dual-Feed AR-15 Upper, 5.56x45mm NATO, 16.25" Barrel, Black Finish.

Fightlite Industries MCR060M Dual-Feed AR-15 Upper, 5.56x45mm NATO, 16.25" Barrel, Black Finish.

$5899 99
In Stock
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CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

$479 93
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Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

$984 96
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Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

$984 96
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TacFire BU-556-5 AR-15 Complete Upper Assembly 5.56x45mm NATO 5" Black Nitride Barrel Black Finish

TacFire BU-556-5 AR-15 Complete Upper Assembly 5.56x45mm NATO 5" Black Nitride Barrel Black Finish

Out of Stock
TacFire 5.56x45mm 16" AR-15 Complete Upper Receiver with BCG

TacFire 5.56x45mm 16" AR-15 Complete Upper Receiver with BCG
Out of Stock
Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 11.50" Flat Dark Earth Cerakote Upper Receiver Group - CKPROURG556115BFDE

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 11.50" Flat Dark Earth Cerakote Upper Receiver Group - CKPROURG556115BFDE

Out of Stock
Tacfire AR-15 Upper Receiver with Dust Cover and Forward Assist - UP01-C

Tacfire AR-15 Upper Receiver with Dust Cover and Forward Assist - UP01-C
Out of Stock
Rosco Manufacturing Husky 11.5" Barrel HSK-115-SOC-556-7-C-CL 5.56 NATO 4150 CMV Chrome Lined Phosphate AR-15

Rosco Manufacturing Husky 11.5" Barrel HSK-115-SOC-556-7-C-CL 5.56 NATO 4150 CMV Chrome Lined Phosphate AR-15

Out of Stock
Lead & Steel LS556PEN-MID-16 16" 5.56mm Pencil Profile 4150 CMV QPQ Nitride Mid-Length AR-15 Barrel

Lead & Steel LS556PEN-MID-16 16" 5.56mm Pencil Profile 4150 CMV QPQ Nitride Mid-Length AR-15 Barrel

Out of Stock
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