This Bushmaster XM-15 E2 features a 16" Heavy Barrel Carbine which provides heavy-duty performance whenever duty calls. The heavy profile 16" chrome moly vanadium steel barrel is manganese phosphate-finished to insure protection against corrosion and rust, and the carbine features a threaded birdcage flash suppressor and a 6-position telescoping stock. The upper and lower receivers are machined from 7075-T6 aircraft aluminum forgings for light weight and added strength. This rifle has been upgraded with a one off Custom Cerakote three color "Cookie Monster Camo" design, Free-Float Samson Manufacturing Handguard, Magpul STR Carbine Stock, Magpul MOE+ Grip and Magpul ASAP QD Sling Attachement.