THIS KIT IS EVERYTHING YOU NEED TO BUILD A MICRO AR PISTOL EXCEPT A STRIPPED LOWER. The receiver is a flat top M4 Mil-Spec upper receiver are forged CNC Machined from 7075-T6 Aluminum, the hardest and most durable material of any upper. The MICRO 5” 5.56 NATO barrel is made from 4150 Chrome Moly steel, has 1:5 twist rate & MICRO gas system.
NOTE: Images may not be an exact representation of the product. Please Read Our Statement on the ATF Pistol Brace Rule. It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item.