13.5″ Heavy Duty Billet Aluminum AR-15 / M4 Builders Set Battleworn

• Made in the USA
• Lower and upper receivers are machined in-house from 7075-T6 billet aluminum stock
• Handguard is machined in-house from 6061-T6 extruded aluminum
• Compatible with all Mil-Spec AR-15 / M4 parts
• Slick side design
• Dust Cover included
• Threaded Bolt catch screw pin – included, easily install the bolt catch assembly using a standard 1/16″ Hex Key
• Threaded rear take-down detent bore with the use of a 4-40 set screw
• Includes tension adjustment screw to fine tune the fit with the upper assembly
• Flared Magwell for easy mag changes

This item must ship to an FFL