$150.00
MIDWEST INDUSTRIES BLACK NITRIDE AR15 BOLT CARRIER GROUP
- Phone Number: Click to view
- Condition: New
- Listing Type: Individual
- City: Lehi
- State: Utah
- Zip/Postal Code: 84048
- Local County (e.g., Summit County): Utah County
- Make/Brand: Midwest Industries
- Model: MI-BCG-NIT
- Caliber: .223/5.56/.300BLK
- Terms: Must agree to terms
- Listed: June 29, 2026 8:18 pm
- Expires: 59 days, 3 hours

Add to favorites
Description
Midwest Industries Assembled Bolt Carrier Group for AR-15/M16
8620 M16 style carrier
Black Nitride finish
Properly heat treated
Final grind before plating
• 9310 Steel 5.56/.223 bolt
• Heat treated
• Shot peened
• Precision ground for perfect dimensions
• Black Nitride finish
• MPI – Magnetic Particle Inspected
• 4140 Gas Key
Black Nitride finish
Properly torqued with Grade 8 fasteners
Properly staked to ensure reliability
• 4140 Cam Pin
Heat Treated
Black Nitride finish
• Machined from solid 4140 bar stock, heat treated and shot peened
• Phosphate coated for reliable extraction
• Extractor insert included
• O-Ring included
• Firing pin precision machined from 17-4 H-
900 Stainless Steel
• 100% USA Made
If you have any questions or would like to see more photos, feel free to shoot me a text!





