M16 Bolt Carrier Group C-158 Bolt — Chrome-Lined, Billet Extractor, 5.56, Manganese Phosphate
- M16 Style Carrier
- Machined from 8620 Steel
- Chrome-Lined
- Heat Treated
- Final Grind Before Plating
- Manganese Phosphate Finish
Description
This carrier is machined by Outerwild from Mil-Spec 8620 Steel with a Manganese Phosphate finish that provides long-lasting resistance to corrosion. The interior is hard chrome lined creating a mirror-like, exceptional finish that is trusted by seasoned shooters and depended on by experienced builders. Outerwild’s secret sauce for our favored BCGs is that they are PRECISION GROUND. We machine and grind our BCGs to perform for tens of thousands of rounds. We grind the outside dimensions and ALL three interior dimensions of our carrier, giving our BCGs a near friction-less surface finish.
- M16 Style Carrier
- Machined from 8620 Steel
- Chrome-Lined
- Heat Treated
- Final Grind Before Plating
- Manganese Phosphate Finish
- Carpenter 158 Bolt 5.56/.223 Bolt
- Heat Treated
- Shot Peened
- MPI Tested (Magnetic Particle Inspection)
- Phosphate Finish
- Billet Gas Key
- Machined from Solid Billet of 4130 Steel
- Chrome-Lined
- Properly Seated with Grade 8 Fasteners
- Properly Staked
- Manganese Phosphate Finish
- Cam Pin
- Machined from 4140 Steel
- Heat Treated
- Manganese Phosphate Finish
- Billet Extractor
- Machined from a Solid Billet of 4140 Steel
- Heat Treated
- Shot Peened
- Phosphate Coated
- Extractor Insert Included
- Viton O-Ring Included
- Firing Pin
- Machined from 8640 Steel
- Hard Chrome Plated
- 100% American Made
