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.

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  1. BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Barrel, .223 Wylde, Mid Length Gas System, 1:7 Twist w/ 12" MLOK
    BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Barrel, .223 Wylde, Mid Length Gas System, 1:7 Twist w/ 12" MLOK
    Sku: UA223WMHB1817(P)-(12)MLOK3
    Special Price $217.90 was $283.27

    SKU: UA223WMHB1817(P)-(12)MLOK3

    • 18" Heavy Barrel
    • 4150 Chrome Moly Vanadium Steel
    • Parkerized Finish
    • 1:7 Twist
    • 12" MLOK Rail
    • .223 Wylde Caliber
    • Mid Length Gas System
    • M4 Flat Top Forged Upper Receiver
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
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  2. webmain
    BCA AR-15 Complete Upper Assembly, 16" Parkerized 4150 Heavy Barrel, .300 Blackout, 1:8 Twist, w/ 12" M-LOK Rail, .750 Gas Block Diameter
    Sku: UA300CHB1618(P).750-(12)MLOK3
    Special Price $217.90 was $283.27

    SKU: UA300CHB1618(P).750-(12)MLOK3

    • 16" 4150 Parkerized Barrel w/ 1:8 Twist
    • Heavy Barrel Profile
    • MLOK
    • .300 Blackout Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System,
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
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  3. thumb
    BCA AR-15 Complete Upper Assembly 7.62x39, 16" 4150 Parkerized Barrel, 1:10 Twist w/ 10" Free Floating Quad Rail
    Sku: UA762CHB16110(P)-(10)FFQ
    Special Price $217.90 was $283.27

    SKU: UA762CHB16110(P)-(10)FFQ

    • 16" 4150 Parkerized Barrel w/ 1:10 Twist
    • Heavy Barrel Profile
    • Free Floating Quad Rail
    • 7.62x39 Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System
    • BCA Standard BCG
    • Charging Handle
    • Bird Cage Flash Hider
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  4. BCA AR-15 Complete Upper 16” Black Nitride 416R Stainless Steel Heavy Barrel, Black Wolf Fluted, .300 Blackout, Carbine Length Gas System, 1:8 Twist w/ 10” MLOK Rail
    BCA AR-15 Complete Upper 16” Black Nitride 416R Stainless Steel Heavy Barrel, Black Wolf Fluted, .300 Blackout, Carbine Length Gas System, 1:8 Twist w/ 10” MLOK Rail
    Sku: UA300CHB1618(SSBWF)-(10)MLOK3
    Special Price $218.90 was $310.57

    SKU: UA300CHB1618(SSBWF)-(10)MLOK3

    • 16" Heavy Barrel
    • 416R Stainless Steel
    • Black Nitride Finish
    • Black Wolf Flutes
    • 1:8 Twist
    • 10" MLOK Rail
    • .300 Blackout
    • Carbine Length Gas System
    • Charging Handle
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  5. BCA Side Charging AR-15 Complete Upper Assembly, 5.56 NATO, 10.5" 416R Stainless steel, Parkerized Barrel, 1:7 Twist with Light Weight KeyMod
    BCA Side Charging AR-15 Complete Upper Assembly, 5.56 NATO, 10.5" 416R Stainless steel, Parkerized Barrel, 1:7 Twist with Light Weight KeyMod
    Sku: UASC556CM410.517(P)-(10)LWKM3
    Special Price $219.90 was $285.87

    SKU: UASC556CM410.517(P)-(10)LWKM3

    • 10.5" 416R Stainless Steel Barrel w/ 1:7 Twist
    • Parkerized
    • 5.56 NATO Caliber
    • M4 Flat Top Upper Receiver
    • Carbine Length Gas System, .750 Diameter Gas Block
    • BCA Standard BCG
    • Side Charging
    • Bird Cage Flash Hider
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  6. BCA 47 Standard AR-15 Complete Upper Assembly 7.62x39, 16" 4150 Black Nitride barrel, 1:10 Twist, Standard Hand Guard w/ Front Sight
    BCA 47 Standard AR-15 Complete Upper Assembly 7.62x39, 16" 4150 Black Nitride barrel, 1:10 Twist, Standard Hand Guard w/ Front Sight
    Sku: UA762CHB16110(M)-SHG(FS)
    Special Price $219.90 was $285.87

    SKU: UA762CHB16110(M)-SHG(FS)

    • 16" Black Nitride 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 Standard BCA Bolt
    • Charging Handle
    • Bird Cage Flash Hider
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  7. BCA AR-15 Complete Upper Assembly, 5.56 NATO, 16" 4150 Black Nitride Barrel, 1:9 Twist, Standard Hand Guard w/ Front Sight
    BCA AR-15 Complete Upper Assembly, 16" Black Nitride 4150 Steel Contour Barrel, 5.56 NATO, 1:9 Twist, w/ Standard Hand Guard, Front Sight
    Sku: UA556CM41619(M)-SHG(FS)
    Special Price $219.90 was $285.87

    SKU: UA556CM41619(M)-SHG(FS)

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:9 Twist
    • Contour Barrel Profile
    • Standard Hand Guard
    • 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
  8. BCA AR-15 Complete Upper Assembly, 5.56 NATO, 16" 4150 Black Nitride Barrel, 1:8 Twist, Standard Hand Guard w/ Front Sight
    BCA AR-15 Complete Upper Assembly, 16" Black Nitride 4150 Steel Contour Barrel, 5.56 NATO, 1:8 Twist, w/ Standard Hand Guard, Front Sight
    Sku: UA556CM41618(M)-SHG(FS)
    Special Price $219.90 was $285.87

    SKU: UA556CM41618(M)-SHG(FS)

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • Contour Barrel Profile
    • Standard Hand Guard
    • 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
  9. BCA AR-15 Complete Upper Assembly, .223 WYLDE, 16" 4150 Black Nitride barrel, 1:7 Twist, Standard Hand Guard w/ Front Sight
    BCA AR-15 Complete Upper Assembly, 16" Black Nitride 4150 Steel, M4 Contour Barrel, .223 Wylde, 1:7 Twist w/ Standard Hand Guard, A2 Front Sight
    Sku: UA223WCM41617(M)-SHG(FS)
    Special Price $219.90 was $285.87

    SKU: UA223WCM41617(M)-SHG(FS)

    • 16" Black Nitride 4150 Chrome Moly Vanadium Barrel w/ 1:7 Twist
    • M4 Contour
    • Standard Hand Guard
    • .223 WYLDE 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
  10. UA6.5CM41618(P)-SHG(FS)-WEBMAIN
    BCA AR-15 Complete Upper Assembly, 16" 4150 Parkerized Barrel, 6.5 Grendel Type II, 1:8 Twist, Standard Hand Guard w/ Front Sight
    Sku: 670-UA6.5CM41618P-SHGFS
    Special Price $219.90 was $285.87

    SKU: UA6.5CM41618(P)-SHG(FS)

    • 16" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist
    • M4 Contour Barrel Profile
    • A Front Sight
    • 6.5 Grendel Type II 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
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