Upgrade your rifle build with this exclusive AR-15 barrel and BCG combo—featuring the legendary Microbest OEM Chrome Bolt Carrier Group (BCG) and a Ballistic Advantage 16″ 5.56 Modern Series Barrel. This pairing gives you both reliability and accuracy, making it an ideal choice for your next AR-15 upper receiver build.
🔹 Microbest Chrome BCG (OEM)
A bolt carrier group is the heart of your AR-15, and Microbest sets the standard for quality. Used by military and leading rifle manufacturers, this mil-spec BCG is fully chrome plated for durability and smooth operation.
- Mil-Spec 8620 Carrier – Full Chrome Finish
- Carpenter 158 Bolt (C158) – Shot Peened
- Individually High Pressure Tested (HPT) & Magnetic Particle Inspected (MPI)
- Sprinco extractor and ejector springs with Sprinco insert
- Phosphate extractor for better case rim grip & reliable extraction
- OCKS gas key screws (properly staked)
- Chrome cam pin, firing pin, and retaining pin
👉 See all our AR-15 Bolt Carrier Groups (BCGs)
🔹 Ballistic Advantage 16″ 5.56 Modern Series Barrel
The Ballistic Advantage 16″ M4 Profile Barrel is engineered for accuracy and reliability. Made from 4150 Chrome Moly Vanadium (CrMoV) steel with a QPQ corrosion-resistant finish, this barrel offers long-lasting performance for your rifle.
- Length: 16″ – M4 Profile
- Material: 4150 CrMoV Steel
- Finish: QPQ Corrosion Resistant
- Twist Rate: 1:7″
- Gas System: Carbine Length
- Gas Block Journal: .750″
- Muzzle: 1/2×28 Threaded
- Weight: 28 oz
- M4 feed ramps (QPQ coated extension)
👉 Browse more AR-15 Barrels
🔹 Why Buy This Combo?
- Perfect foundation for a reliable AR-15 upper build
- Combines Microbest’s OEM Chrome BCG with a Ballistic Advantage 16″ barrel
- Military-proven reliability + match-grade accuracy
- Save money with this exclusive combo deal
🔹 Shop More AR-15 Parts & Accessories
✅ Order today from Midstate Firearms—your trusted source for AR-15 barrels, BCGs, and rifle parts.
(1)-300x300.jpg "Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223, photo")
