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Complete Upper Assemblies

Bear Creek Arsenal Complete Upper Assemblies consist of a Barrel, Flash Hider, Hand Rail, Barrel Nut, Gas Block, Gas Tube, Complete BCG (Bolt Carrier Group), and a Charging Handle.

Items 1 to 25 of 44 total

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  1. BCA 10.5" Complete Upper

    BCA 10.5" 5.56 NATO AR-15 Complete Upper Assembly

    Special Price $279.00

    (Was $374.00 )

    Out of stock

    SKU: UA556CM410.517(P)-(10)LWKM

    • 10.5" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • 10" Keymod Rail
    • 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  2. BCA 300 BLACKOUT 10.5" MLOK COMPLETE UPPER

    BCA .300 Blackout 10.5" AR-15 M-LOK Complete Upper Assembly

    $384.00

    SKU: UA300PHB10.517(SS)-(10)MLOK

    • 10.5" 416R Stainless Steel Barrel w/ 1:7 Twist
    • Heavy Barrel Profile
    • 10" M-LOK Rail
    • .300 Caliber Blackout
    • M4 Flat Top Upper Receiver
    • Pistol Length Gas Block, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  3. BCA 16” MLOK FDE COMPLETE UPPER

    BCA Branded 16” M-LOK .223 WYLDE AR-15 Complete Upper Assembly - Flat Dark Earth Cerakote

    Special Price $379.00

    (Was $444.00 )

    SKU: UA223WCM41619(M)-(15)(FDE)MLOK

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • 15" M-LOK Rail Flat Dark Earth
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver Flat Dark Earth
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  4. The BCA Brown Bear II 16" .223 WYLDE / 5.56 NATO AR-15 Complete Upper Assembly

    The BCA Brown Bear II 16" .223 WYLDE / 5.56 NATO AR-15 Complete Upper Assembly

    $269.00

    SKU: UA223WCM41617(P)-SHG

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • Standard Hand Guard
    • .223 WYLDE / 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  5. Back

    BCA 16", .223 WYLDE Left Handed Complete Upper Assembly

    Special Price $359.00

    (Was $436.99 )

    Out of stock

    SKU: UALSC223WCM41617(P)-(15)LWKM

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • 15" Keymod Rail
    • .223 WYLDE Caliber
    • M4 Flat Top Left Dual Charging Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Left Handed BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  6. bca_47_side_charging_upper_02

    BCA 47 SIDE CHARGING

    $376.65

    SKU: UASC762CHB16110(P)-SHG

    Learn More
  7. 300 blackout 16" Barrel 12" Lightweight Keymod BCA Upper Assembly

    BCA Branded 300 Blackout 15" Lightweight KeyMod 16" AR-15 Complete Upper Assembly

    Special Price $279.00

    (Was $374.00 )

    Out of stock

    SKU: UA300CHB1618(P).750-(15)LWKM

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • Heavy Barrel Profile
    • 15" Keymod Rail
    • .300 Blackout Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  8. The BCA Brown Bear 16" .223 Wylde AR-15 Complete Upper Assembly

    The BCA Brown Bear 16" .223 Wylde AR-15 Complete Upper Assembly

    $269.00

    SKU: UA223WCM41619(P)-SHG

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • Standard Hand Guard
    • .223 Wylde Caliber
    • M4 Flat Top Upper Receiver
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  9. BCA Branded 300 Blackout 15" M-LOK 16" AR-15 Complete Upper Assembly

    BCA Branded 300 Blackout 15" M-LOK 16" AR-15 Complete Upper Assembly

    Special Price $289.00

    (Was $374.00 )

    Out of stock

    SKU: UA300CM41617(P)-(15)MLOK

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • .300 Blackout Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  10. The BCA Premium Brown Bear 16" .223 WYLDE AR-15 Complete Upper Assembly

    The BCA Premium Brown Bear 16" .223 WYLDE AR-15 Complete Upper Assembly

    Special Price $289.00

    (Was $315.00 )

    SKU: UA223WCM41619(M)-SHG

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • Standard Hand Guard
    • .223 Wylde Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  11. Ursid Hybrid Upper Parkarized with BCG

    URSID HYBRID BEAR Parkarized 16" .223 WYLDE AR-15 Complete Upper Assembly

    Special Price $279.00

    (Was $374.00 )

    Out of stock

    SKU: UA223WCM41618(P)-(15)LWKM

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • Contour Barrel Profile
    • 15" Keymod Rail
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  12. BCA ANDEAN BEAR COMPLETE UPPER

    BCA Andean Bear 16" 5.56 NATO AR-15 Complete Upper Assembly

    Special Price $289.00

    (Was $374.00 )

    Out of stock

    SKU: UA556MM41617(P)-(15)LWKM

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • 15" Keymod Rail
    • 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Mid Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  13. BCA 16" MLOK Complete Upper

    BCA Branded 16" .223 Wylde / 5.56 NATO M-LOK AR-15 Complete Upper Assembly

    $384.00

    SKU: UA223WCM41619(M)-(15)MLOK

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • 15" Keymod Rail
    • .223 WYLDE / 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Mid Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  14. BCA 16” BEAR CLAW FDE COMPLETE UPPER

    BCA Branded 16” .223 WYLDE Bear Claw AR-15 Complete Upper Assembly - Flat Dark Earth Cerakote

    $492.69

    Out of stock

    SKU: UA223WCHB1618(SSBCF)-(15)(FDE)MLOK

    • 16" Black Nitride 416R Stainless Steel Bear Claw Fluted Barrel w/ 1:8 Twist
    • Heavy Barrel Profile
    • 15" Keymod Rail, Cerakoted in flat dark earth
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver, Cerakoted in flat dark earth
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  15. Ursid Hybrid Upper Stainless

    URSID HYBRID BEAR 16" .223 WYLDE AR-15 UPPER ASSEMBLY (NO BCG - STAINLESS)

    Special Price $139.99

    (Was $282.95 )

    Out of stock

    SKU: UHA223WCM41618(SS)-(15)LWKM

    • 16" 416R Stainless Steel Barrel w/ 1:8 Twist
    • Contour Barrel Profile
    • 15" Light Weight Keymod
    • .223 Wylde Caliber
    • M4 Flat Top Upper Receiver
    • NO BCG
    • NO Charging Handle
    • Stainless Steel A2 Flash Hider
    Learn More
  16. The Side Charging BCA Brown Bear 16" .223 WYLDE AR-15 Complete Upper Assembly

    The Side Charging BCA Brown Bear 16" .223 WYLDE AR-15 Complete Upper Assembly

    Special Price $299.00

    (Was $425.00 )

    SKU: UASC223WCM41619(P)-SHG

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • 15" Light Weight Keymod
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  17. BCA SIDE CHARGING, FREE FLOAT COMPLETE UPPER

    BCA Side Charging, Free Float 16" .223 WYLDE AR-15 Complete Upper Assembly

    Special Price $319.00

    (Was $390.15 )

    SKU: UASC223WCM41619(P)-(10)FFQ

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • 10" Quad Rail
    • .223 WYLDE Caliber
    • M4 Flat Top Side Charging Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  18. BCA 47 SIDE CHARGING WITH LIGHT WEIGHT KEYMOD COMPLETE UPPER (STAINLESS)

    BCA Branded 47 Side Charging with Light Weight KeyMod 16" 7.62x39 AR-15 Complete Upper Assembly

    Special Price $319.00

    (Was $480.00 )

    Out of stock

    SKU: UASC762CHB16110(SS)-(15)LWKM

    • 16" 416R Stainless Steel Barrel w/ 1:10 Twist
    • Heavy Barrel Profile
    • 15" Keymod Rail
    • 7.62x39 Caliber
    • M4 Flat Top Side Charging Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG with Proprietary BCA AKM Bolt
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  19. The BCA Kodiak 16" .223 WYLDE AR-15 Complete Upper Assembly

    The BCA Kodiak 16" .223 WYLDE AR-15 Complete Upper Assembly

    Special Price $289.00

    (Was $345.00 )

    SKU: UA223WCM41619(P)-(10)FFQ

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • 10" Quad Rail
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  20. The BCA Black Bear 16" 300 Blackout AR-15 Complete Upper Assembly

    The BCA Black Bear 16" 300 Blackout AR-15 Complete Upper Assembly

    Special Price $279.00

    (Was $344.98 )

    Out of stock

    SKU: UA300CHB1618(P).750-(10)FFQ

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • Heavy Barrel Profile
    • 10" Quad Rail
    • .300 Blackout Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  21. BCA 47  Standard

    BCA 47 Standard 16" 7.62x39 AR-15 Complete Upper Assembly

    Special Price $289.00

    (Was $309.99 )

    Out of stock

    SKU: UA762CHB16110(P)-SHG(GB)

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:10 Twist
    • Heavy Barrel Profile
    • Standard Hand Guard
    • 7.62x39 Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Low Profile Gas Block
    • BCA Standard BCG with proprietary BCA AKM Bolt
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  22. BCA 47 Standard w/ Front Sight 18" 7.62x39 AR-15 Complete Upper Assembly

    BCA Branded 47 Standard W/ Front Sight 18" 7.62x39 AR-15 Complete Upper Assembly

    Special Price $269.00

    (Was $309.99 )

    SKU: UUA762CHB16110(P)-SHG(FS)

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:10 Twist
    • Heavy Barrel Profile
    • Standard Hand Guard
    • 7.62x39 Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Low Profile Gas Block
    • BCA Standard BCG with proprietary BCA AKM Bolt
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  23. Ursid Hybrid Upper Stainless

    URSID HYBRID BEAR Stainless 16" .223 WYLDE AR-15 Complete Upper Assembly

    $384.00

    SKU: UA223WCM41618(SS)-(15)LWKM

    • 16" 416R Stainless Steel Barrel w/ 1:8 Twist
    • Contour Barrel Profile
    • 15" Keymod Rail
    • .223 WYLDE Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  24. The BCA Kodiak Upper 2

    The BCA Kodiak 2 16" 5.56 NATO AR-15 Complete Upper Assembly

    $295.00

    SKU: UA556MM41617(P)-(10)FFQ

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • Contour Barrel Profile
    • 10" Quad Rail
    • 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Mid Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More
  25. 300 blackout 16" Barrel 12" Lightweight Keymod BCA Upper Assembly

    BCA Branded 300 Blackout 12" Lightweight KeyMod 16" AR-15 Complete Upper Assembly

    Special Price $279.00

    (Was $374.00 )

    Out of stock

    SKU: UA300CHB1618(P).750-(12)LWKM

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • Heavy Barrel Profile
    • 12" Keymod Rail
    • .300 Blackout Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
    Learn More

Items 1 to 25 of 44 total

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