Search
Compare
main product photo

BC-15 | 5.56 NATO Upper | 8.5" Parkerized M4 Barrel | 1:7 Twist | Pistol Length Gas System | 5" MLOK

Rating:
94 % of 100
16   Reviews Add Your Review
In stock
SKU
UAF-1109-556PM48.517P-5ASR
Special Price $204.95 Regular Price $284.99
Add to Wish List Add to Compare

This BCA AR-15 complete 5.56 Nato pistol length upper has a 8.5" M4 contour barrel with a parkerized finish, and features a 1:7 twist rate, with a pistol length gas system. It includes the new 5" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 5.56 Nato upper is compatible with any mil-spec AR-15 lower.

Shop more 5.56 NATO Uppers!

Check out Magazines here!

*Note – We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive.

Attention SignAttention Sign

WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to the California P65 Warning site.

It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed 

More Information
Color Anodized - Default
SKU UAF-1109-556PM48.517P-5ASR
Hand Guard MLOK
Weight (lbs) 3.300000
Manufacturer Bear Creek Arsenal
Magazine Capacity N/A
Barrel Length 8.5
Profile M4 Contour
Twist 1:7
Barrel Finish Parkerized
Material 4150 Chrome Moly Vanadium
Thread Pitch 1/2 x 28
Caliber 5.56 NATO
Feed Ramp M4
Flutes Non-fluted
Gas System Pistol Length
Gas Block System 0.750
Charging Style Rear Charging
Classification Complete Upper Assembly
Platform AR-15
Bolt Material E9310
Choke Tubes No

View Product Manuals

Customer Reviews
Customer Questions
What magazine/ammo does BCA recommend for each caliber?
Caliber Magazine Ammo Grain Weight Ammo Brands   BCA Status AR15 - 223/5.56 MagPul PMAG, MFT 55, 69, 75   Sierra   AR15 - 224 Valkyrie ASC 90 Sierra   AR15 - .22 ARC ASC 88 Hornady   ...
Read More
How do I clean and maintain my AR?
Check out this video to learn How to Clean & Maintain your Rifle 
Read More
Do you have a storefront that I can buy in person?
No we do not have a storefront. You can only purchase online. Sanford, NC is our manufacturing plant. 
Read More
How do I change the barrel in my AR?
Check out this video to learn how to change your AR barrel: https://youtu.be/4C0NEPFur6A?si=Nrhiawz76SWkFeD0
Read More
Please, mind that only logged in users can submit questions

 It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed.

You need to be 18 or older to purchase a rifle and 21 or older to purchase a handgun, Pistols, lower assembly or Ammunition.

* Note – We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive.

Attention SignAttention Sign

WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to the California P65 Warning site.

Ratings & Reviews
4.7
Rating:
94 % of 100
16   Reviews Add Your Review
We found other products you might like!
Write your review
About the BC-15 | 5.56 NATO Upper | 8.5" Parkerized M4 Barrel | 1:7 Twist | Pistol Length Gas System | 5" MLOK
Only registered users can write reviews. Please Sign in or create an account
Copyright © 2026 Bear Creek Arsenal, LLC. All Rights Reserved.