12.5" Patrol 556 Upper Receiver Group
The Rosco 12.5” K9 barrel blends the lines between ultimate precision and a short lightweight maneuverable carbine. The operation of the patrol length gas system gives this carbine the lightest recoil possible out of a 12.5” barrel. The barrel is made from 416R stainless steel that produces excellent accuracy. A nitride finish hardens the barrel for good service life. The medium taper profile provides good barrel harmonics along with strength where it is needed most. Overall, this upper gives you the best accuracy, recoil impulse and reliability in a short package.
UPPER RECEIVER: Mil-Spec forged 7075 T6 aluminum. Upper will come lapped for a perfect fitment with the barrel.
BOLT CARRIER GROUP: Mil-Spec Bolt Carrier Group. Phosphate finish and chrome lined bore.
CHARGING HANDLE: Not included. Charging handles are available for purchase under the products page.
HANDGUARD: Midwest Industries M-LOK Combat Rail 11.5”. Handguard screws will be treated with medium strength thread locker and will be witnessed marked.
BARREL INFORMATION: Rosco 12.5” 5.56 medium taper profile with Patrol length gas. Thread pattern 1⁄2 x 28.
GAS BLOCK: Low profile gas block. Set screws come with high temperature thread locker and will be witnessed marked.
MUZZLE DEVICE: No muzzle device (bare threads). Installed muzzle device is available for purchase under products page.
Five rounds of SAAMI specification ammunition will be test fired. Proceeding the test fire headspace will be measured to confirm the barrel and bolt are within specification.
WEIGHT: 3 lb 12.5 oz
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Sale is prohibited in the following states: California, Delaware, Hawaii, Maryland, New Jersey, Washington, Connecticut, Washington D.C., Illinois, Massachusetts & New York.
DISCLAIMER: These uppers are designed to function suppressed or unsuppressed. Steel case or low pressure ammunition was not intended to be used. For optimal functionality use SAAMI specification 5.56 NATO & 223 Remington. Pictures shown may not fully represent what the product looks like. Please read the product description for the correct parts list.
Warranty: Each product will be insured until the moment it gets delivered to the third-party shipping provider. Once you receive your upper receiver group in the correct condition, we will cover faulty or premature parts breakage. If a part breaks early in the uppers lifespan it will be replaced free of charge. It will be your responsibility to ship the product back for maintenance. Once the part has been replaced, the upper will be test fired with five rounds of SAAMI specification ammunition and head spacing will be evaluated. We will then ship the fixed upper receiver back to you. Broken parts from normal wear and tear can be replaced for the cost of parts and labor. All branded parts will be covered if they are faulty or do not work as intended. If you shoot the barrel out and it becomes inaccurate or starts to keyhole, I will replace the first barrel for free. Go out, train and shoot the barrel out!
Please allow up to 3 Business Days to process your order.