Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Questions & Answers
Caliber: .450 Bushmaster Barrel Length: 16 inBarrel Profile: Heavy Gas System Length: Carbine Length Barrel Twist Rate: 1-24 Finish: Parkerized Handguard Length: 15 inGun Rail: M-LOK Gun Make: AR Platform Gun Model: AR-15 Barrel Material: 416R Stainless Steel

Code: 5NY-URC-14PK-543NSCH450CHB16124P875

MPN: 543N-UASCH450CHB16124P875-15M3

Product No Longer Available

Product Info for Bear Creek Arsenal AR-15 .450 Bushmaster 16in Right Side Charging Upper Receiver

This BCA AR-15 complete 9MM pistol upper has a 10.5 inch M4 barrel with a parkerized finish, and features a 1:10 twist rate, with a blow back gas system. It includes a 9.5 inch MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and Gen 2 (patent pending) right-side charging handle and will fit on a mil-spec AR-9 lower.Shop more 9mm!image

Package Content

  • Bear Creek Arsenal AR-9 9mm 10,5in Billet Upper Receiver with Right Side Charging Handle

Gun Triggers

1–15 / 15
Previous
Next

Gunsmithing Tools & Accessories

1–16 / 16
Previous
Next

Gun Parts and Accessories

1–29 / 29
Previous
Next

Magazine and Accessories

1–21 / 21
Previous
Next

Gun Barrels

1–13 / 13
Previous
Next

Gun Sights

1–18 / 18
Previous
Next

Gun Stocks

1–19 / 19
Previous
Next

Mounts, Rings and Accessories

1–19 / 19
Previous
Next

Related Products to Bear Creek Arsenal AR-15 .450 Bushmaster 16in Right Side Charging Upper Receiver

Bear Creek Arsenal AR-15 .450 Bushmaster 16in Right Side Charging Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • Bear Creek Arsenal AR-15 .450 Bushmaster Right Side Charging Upper Receiver, 16in Parkerized Heavy Barrel, 1-24 Twist, Carbine Length, 15in MLOK, 543NSCH450CHB16124P875 , MPN: 543N-UASCH450CHB16124P875-15M3 , Code: 5NY-URC-14PK-543NSCH450CHB16124P875
  • Bear Creek Arsenal AR-15 .450 Bushmaster Right Side Charging Upper Receiver, 16in 416R SS Heavy Barrel, 1-24 Twist, Carbine Length, 15in MLOK, 9761NSCH450CHB16124SS875 , MPN: 9761NUASCH450CHB16124SS87515M3 , Code: 5NY-URC-14PK-9761NSCH450CHB16124SS875
  • Bear Creek Arsenal AR-15 .450 Bushmaster Right Side Charging Upper Receiver, 16in Parkerized Heavy Barrel, 1-24 Twist, Carbine Length, 11.5in MLOK, 228NSCH450CHB16124P936 , MPN: 228N-UASCH450CHB16124P936-12M3 , Code: 5NY-URC-14PK-228NSCH450CHB16124P936
  • Bear Creek Arsenal AR-15 .450 Bushmaster Right Side Charging Upper Receiver, 16in Parkerized Heavy Barrel, 1-24 Twist, Carbine Length .936, 15in MLOK, 110NSCH450CHB16124P936 , MPN: 110N-UASCH450CHB16124P936-15M3 , Code: 5NY-URC-14PK-110NSCH450CHB16124P936
Compare (0)