The 16 inches Lo-Drag classic bull barrel assembly is engineered for precision shooting, featuring a bull barrel profile that enhances stability through added weight, thereby reducing recoil and improving accuracy. Constructed from high-quality 4150 steel, the barrel ensures durability and longevity. It incorporates a 1:7 twist rate, optimal for stabilizing heavy projectiles. The assembly includes a 2-piece handguard and is designed for those seeking a heavy barrel with precision shooting capabilities. The assembly begins with the 16 inches Lo-Drag classic bull barrel, crafted from 4150 CMV steel with a 1:7 twist and is integrated with the Lo-Drag flattop receiver which includes a bolt carrier and charging handle.

6061-T6 Extruded aluminum upper component
Black upper with hardcoat anodization
Carpenter 158 steel bolt specification
Extractor bolt composed of 4140 alloy steel
Army specification heat treatment bolt
Manganese phosphate-coated bolt
Bolt carrier composed of 8620 steel
4340 alloy steel cam pin component
4130 alloy steel bolt carrier key
5.56x45mm caliber
4150 chrome moly vanadium (CMV) barrel
Gas block journal with diameter of 0.936 inches
Carbine length gas tube
Barrel twist rate - 1:7 right-handed
Lands and groves - section 6
M4 feed ramp extension barrel
Button engaged
Non-chrome-lined
Come with 2-piece carbine style handguard, Lo-Drag target crown bull barrel 16 inches, Lo-Drag upper, fully assembled bolt carrier, carbine gas tube, gas block 0.936 inches and charging handle

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All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.