- Platform: AR15
- Material: Machined from 7075-T6 forged aluminum
- Finish: Anodized Black
- Markings: "Cal Multi", "M4-" Serial Number Designation
- Compatibility: Works with standard AR15 components and magazines
- Weight(s): 8.61 oz
- Other: Rear takedown pin detent hole is threaded for a 4-40 set screw. Threaded Bolt Catch Roll Pin (Included).