5.56mm NATO

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10%
Luth-AR
Luth-AR 16" Lightweight Barrel Complete Upper Receiver, 223 Rem/556NATO, Black Finish, 15" Palm Handguard Keymod, 1:9...
$399.95 $360.45
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10%
Luth-AR
Luth-AR 18" MARK12 Complete Upper Assembly, Black Finish, 15" Palm Handguard Keymod, 1:9 Twist, Complete Barrel...
$449.95 $404.40
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13%
Black Rain Ordnance
BLACK RAIN SPEC15 UPPR 16" 556 SOCOM
Black Rain Ordnance 556 SOCOM, Complete Upper, 556NATO, 16" SOCOM Profile Chromoly NATO Barrel, Black Finish, 1:7...
$769.00 $668.47
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11%
Colt's Manufacturing
$749.00 $668.47
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11%
Colt's Manufacturing
$1,099.00 $980.90
Out of stock
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11%
Colt's Manufacturing
Colt's Manufacturing Upper, 223 Rem/556NATO, 11.5" Lightweight Barrel, Black Finish, A2 Fixed Front Sight, Magpul...
$749.00 $668.47
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11%
Sig Sauer
Colt's Manufacturing Upper Receiver, 223 Rem/556NATO, 16" M4 Barrel, Black Finish, A2 Flash Hider, Four Rail...
$1,099.00 $980.90
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11%
Colt's Manufacturing
COLT M4 UPPER 5.56 16.1" BLK
Colt's Manufacturing Upper Receiver, 223 Rem/556NATO, 16.1" M4 Barrel, Black Finish, A2 Fixed Front Sight, Magpul...
$749.00 $668.47
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13%
Daniel Defense
DD M4 V9 UPPER URG 16" 556NATO 15.0
Daniel Defense M4 Volume 9 Upper, Fits AR Rifles, 223 Rem/556NATO, 16" HF Barrel, 1:7 Twist, Daniel Defense...
$1,167.00 $1,009.74
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13%
Daniel Defense
DD M4A1 UPPER URG 14.5"PB 556 FDE
Daniel Defense M4A1 Upper Receiver, 223 Rem/556NATO, 14.5" Barrel (16" OAL with Pinned Brake), Carbine Length Gas...
$1,318.00 $1,140.55
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13%
Daniel Defense
Daniel Defense Upper, M4 Volume 11, 223 Rem/556NATO, 16" Lightweight Barrel, 1:7 Twist, Black Finish 23-151-02077-047
$1,069.00 $925.28
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13%
Daniel Defense
DD M4V11 UPPER URG 16" 556NATO
Daniel Defense Upper, M4 Volume 11, 223 Rem/556NATO, 16" Barrel,1:7 Twist, Black Finish 23-151-02197-047
$1,069.00 $925.28
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13%
Daniel Defense
DD M4V7 UPPER 556 16" MLOK BLK
Daniel Defense DDM4V7, Upper, 223 Rem/556NATO, 16" Cold Hammer Forged Barrel, 1:7 Twist, Black Finish, MLOK...
$1,069.00 $925.28
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13%
Daniel Defense
Daniel Defense DDM4V7 S Upper Receiver Group, 556NATO, 11.5" Barrel, 1:7 Twist, Daniel Defense MFR 10" MLOK...
$1,069.00 $925.28
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13%
Daniel Defense
Daniel Defense Upper, MK18 URG, 556NATO, 10.3" Hammer Forged Barrel , 1:7 Twist, Flat Top, Black Finish 23-004-08013-006
$1,242.00 $1,074.63
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13%
Daniel Defense
Daniel Defense Upper Receiver, MK18 URG, 556NATO, 10.3" Hammer Forged Barrel, 1:7 Twist, Flat Top Receiver, Flat Dark...
$1,242.00 $1,074.63
Out of stock
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18%
DPMS
DPMS Upper, Oracle, 556NATO, 16" Barrel, Fits AR-15, Flat Top, Black Finish 60585
$399.00 $327.59
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18%
DPMS
DPMS Upper, 223 Rem, 556NATO, Black, A2 Flash Hider, 16" Heavy Barrel 60580
$519.00 $426.10
Out of stock
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19%
I.O. Inc.
I.O. Inc. Upper Receiver, 223 Rem/556NATO, 16" Barrel, 15" M-Lok Rail, Black Finish, Does not include BCG or Charging...
$349.99 $282.41
Out of stock
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19%
I.O. Inc.
I.O. Inc. Upper Receiver, 223 Rem/556NATO, 7.5" Barrel, 7" Rail, Black Finish AARUML7
$349.99 $282.41
Out of stock
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11%
Radical Firearms
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" SOCOM (Mid) Barrel, 12" FCR, A2 Flash Hider, Black...
$398.95 $353.76
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11%
Radical Firearms
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" SOCOM (Mid) Barrel, 15" FCR, A2 Flash Hider, Black...
$398.95 $353.76
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11%
Radical Firearms
Radical Firearms Complete Upper Assembly, 223 Rem/556NATO, 16" SOCOM (Mid) Barrel, 15" RPR, Zero Impulse Muzzle...
$463.95 $411.40
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14%
Spike's Tactical
Spike's Tactical Upper Receiver, 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Black Finish, Mid-length Gas System,...
$590.00 $506.42
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