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You are here:Tactical Submission Home > Upper Receiver Assemblies
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Chiappa M4-22 .22LR 16" barrel 28 Round Mags Black Finish Complete Upper DPMS Oracle Barrel Upper Assembly 5.56x45mm 1 in 9" Twist 16" Light Contour Barrel
List Price: $349.00
Our Price: $320.00
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List Price: $469.00
Our Price: $429.99
Sale Price: $419.99
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Chiappa M4-22 .22LR 16" barrel 28 Round Mags Black Finish Complete Upper M4-22LRUPPER DPMS Oracle Barrel Upper Assembly 5.56x45mm 1 in 9" Twist 16" Light Contour Barrel BA-OC
Don’t let the ever increasing cost of ammunition prevent you from enjoying your favorite AR-15 / M-16. Chiappa Firearms .22 conversion allows you the opportunity to shoot inexpensive 22 rimfire ammunition for training or just for fun! The M4-22 Rimfire Conversion contains all the parts necessary to change your AR-15 / M-16 from it’s existing caliber to the inexpensive .22LR rimfire cartridge.The conversion takes less than a minute and is achieved with no permanent alterations to your firearm. It can be quickly returned to it’s original caliber.
  • 16" Light Contour Barrel
  • 4140 Chrome-Moly Steel
  • 1-9 Twist
  • Chambered in 5.56x45mm
  • A2 Flash Hider
  • A3 Upper Receiver
  • 6066-T6 Aircraft Aluminum Alloy
  • Hard Coat Anodized Per Mil Spec
  • Complete Bolt Carrier Assembly
  • Single Rail Gas Block
  • GlacierGuards Handguards
DPMS 16" A2 Heavy Barrel Assembly AR-15 Upper DPMS 16" M4 Flat Top .223 Upper Assembly Pre-Ban BAAP416
List Price: $495.00
Our Price: $464.95
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List Price: $524.00
Our Price: $479.99
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DPMS 16" A2 Heavy Barrel Assembly BAA2AS16 DPMS 16" M4 Flat Top .223 Upper Assembly Pre-Ban BAAP416
  • 16" Heavy Contour Barrel
  • 4140 Chrome-Moly Steel
  • Chambered in 5.56x45mm
  • 1-9 Twist
  • A2 Flash Hider
  • A2 Forged Ipper Receiver w/Teflon® Coating
  • GlacierGuardsâ„¢ Hand guards
  • Complete Bolt Carrier Assembly
  • Forged Front Sight Base w/Bayonet Lug
  • .223 Remington/556 NATO
  • 16" Barrel Length
  • All Black Finish
  • Bayonet Lug and A2 Birdcage Flash Hider
  • A2 Front Sight
CMMG Upper 5.56x45 16" Stainless Steel Bull Barrel Bushmaster 6.8mm SPC Upper Receiver
List Price: $579.95
Our Price: $494.95
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List Price: $548.00
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CMMG Upper 5.56x45 16" Stainless Steel Bull Barrel LU-BL55-1604SST Bushmaster 6.8mm SPC Upper Receiver BURA3B16M468
  • 5.56x45 NATO chamber
  • 1:9 twist11 degree recessed target crown
  • Stainless Steel Barrel
  • Forged M4 upper receiver is T marked and has M4 feed ramp cuts
  • Semi Auto bolt carrier
6.8mm SPC Caliber * 16" M4 Profile Barrel * with 26 Round 6.8mm Magazine Mount a "Bushmaster of a higher caliber" on your existing Lower! The .270 cal. 6.8mm SPC (Special Purpose Cartridge) was developed for the military, but is now available commercially. Velocity averages a bit over 2600 FPS (with Hornady 115 Gr. V-Max), and the heavier bullet weights deliver a terminal energy capable of bringing down larger game. Complete 6.8mm SPC Barreled Upper Receiver Assemblies include one 26 Round Magazine.
Spike's Tactical 16" M4 LE Upper 5.56 DPMS 16" AP4 Barrel Assembly w/Detachable Carry Handle M4 A3 .223 16" Pre-Ban BA-AP416CH
List Price: $525.00
Our Price: $499.95
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List Price: $574.00
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Spike's Tactical 16" M4 LE Upper 5.56 DPMS 16" AP4 Barrel Assembly w/Detachable Carry Handle M4 A3 .223 16" Pre-Ban BA-AP416CH
Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hardcoat Anodized finish, T-markings, our logo and M4 feed ramps.
  • 16" AP4 Contour Barrel
  • 4140 Chrome-Moly Steel
  • A3 Upper w/Detachable Carrying Handle
  • A2 Flash hider
  • Threaded Muzzle
  • Bayonet Lug
  • 1-9 Twist
  • Chambered in 5.56x45mm
  • Complete Bolt Carrier Assembly
  • GlacierGuardsâ„¢
  • Forged front sight base
Spike's Tactical 16" Midlength LE Upper 5.56 CMMG .223 M4 Carbine Upper 16" Micro Gas Block
List Price: $535.00
Our Price: $510.95
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List Price: $579.00
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Spike's Tactical 16" Midlength LE Upper 5.56 CMMG .223 M4 Carbine Upper 16" Micro Gas Block
Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hardcoat Anodized finish, T-markings, our logo and M4 feed ramps.
Manufacturer
CMMG
Type
Upper
Caliber
223REM
Caliber
556NATO
Barrel Length
16
Finish/Color
Black
Accessories
Micro Gas Block
Type of Barrel
1:9
Chamber
WASP
Description
Flat Top

CMMG .223 M4 Carbine Upper 16" Bird Cage Armalite M15A4 LEC Complete Carbine Upper Half
List Price: $579.00
Our Price: $519.95
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List Price: $585.00
Our Price: $545.95
Sale Price: $522.21
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CMMG .223 M4 Carbine Upper 16" Bird Cage Armalite M15A4 LEC Complete Carbine Upper Half
Type Upper
Caliber 223REM
Caliber 556NATO
Barrel Length 16
Finish/Color Black
Type of Barrel 1:9
Chamber WASP
Description Flat Top
Fit AR
Sights A2 Front

The M-15A4 LEC Carbine Complete Upper Assembly with A2 front sight features a chrome lined barrel with M203 step down. The Picatinny Rail on the upper receiver allows rapid and repeatable interchange of removable iron or scope sights.
Bushmaster 20" Predator Upper Receiver/Barrel Assembly CMMG Upper .223 M4 Carbine 14.5" Phantom
List Price: $548.00
Our Price: $525.00
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Out of Stock
List Price: $575.95
Our Price: $529.95
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Bushmaster 20" Predator Upper Receiver/Barrel Assembly CMMG Upper .223 M4 Carbine 14.5" Phantom
Adapted from our very accurate and successful 24" Varminter, the Predator Upper Receiver/Barrel Assembly's 20" Fluted Extra Heavy Barrel is button rifled 1 x 8" to stabilize the heavier 69-77 grain bullets that a predator hunter/caller would choose for bigger varmints and predators.
Caliber 223REM
Caliber 556NATO
Barrel Length 14.5
Finish/Color Black
Type of Barrel 1:7
Chamber Chrome Lined
Description
Flat Top
Fit
AR

CMMG .223 M4 Carbine Upper 14.7" Bird Cage CMMG 9mm M4A3 Carbine Upper 16" Bird Cage
List Price: $575.95
Our Price: $529.95
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List Price: $579.00
Our Price: $539.95
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CMMG .223 M4 Carbine Upper 14.7" Bird Cage CMMG 9mm M4A3 Carbine Upper 16" Bird Cage
Manufacturer
CMMG
Type
Upper
Caliber
223REM
Caliber
556NATO
Barrel Length
14.7
Finish/Color
Black
Type of Barrel
1:7
Chamber
Chrome Lined
Description
Flat Top
Fit
AR
Manufacturer Part #
CMMG002UPPER
Manufacturer
CMMG
Type
Upper
Caliber
9MM
Barrel Length
16
Finish/Color
Black
Description
Flat Top
Sights
A2 Front
Manufacturer Part #
CMMG006UPPER
MSRP
$579.00

DPMS 16" 6.8 SPC II AP4 Upper Barrel Assembly CMMG 6.8mm M4LE 16" Bird Cage Carbine Upper
List Price: $604.00
Our Price: $549.95
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Out of Stock
List Price: $629.95
Our Price: $559.95
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DPMS 16" 6.8 SPC II AP4 Upper Barrel Assembly BA-AP468 CMMG 6.8mm M4LE 16" Bird Cage Carbine Upper
  • Chambered in 6.8 SPC II
  • Bolt carrier Assembly Included
  • Barrel is not chrome lined
  • A3 upper
  • 1x11" Twist
  • Glacier Guards
  • 16" Chrome-moly steel barrel

Manufacturer
CMMG
Type
Upper
Caliber
6.8MM
Barrel Length
16
Finish/Color
Black
Type of Barrel
1:11
Description
WASP Finish - Weapons Armored Surface Protection
Fit
AR
Sights
Flat Top
Manufacturer Part #
CMMG10242
MSRP
$629.95

Rock River Arms AR0874B .223 16" Elite CAR UTE2 Complete Upper Smith & Wesson M&P-15 M4 Flat Top Complete 16" Upper
List Price: $560.00
Our Price: $559.95
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Out of Stock
List Price: $689.00
Our Price: $568.11
Sale Price: $568.11
You save $120.89!
Out of Stock

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Rock River Arms AR0874B .223 16" Elite CAR UTE2 Complete Upper Smith & Wesson M&P-15 M4 Flat Top Complete 16" Upper 812003
Rock River Arms AR0874B 5.56mm / .223 16" 1:9 twist barrel Elite CAR UTE2 complete upper with A2 flash hider and mid-length handguard. Mid-length gas system. UTE2 upper receiver with integral rear sight and the same rail height as an A4 upper receiver.
Smith & Wesson M&P-15 M4 Flat Top Complete 16" Upper