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.
Each part in the bolt carrier group is gauged for 100% confidence in functionality. The headspace between the bolt and the barrel is measured for the tightest precision possible. Sprinco enhanced extractor and ejector springs for extreme durability. Each upper is assembled with the uppermost craftsmanship.
UPPER RECEIVER: Mil-Spec forged 7075 T6 aluminum. Upper will come lapped for a perfect fitment with the barrel.
BOLT CARRIER GROUP: Phosphate finish and chrome lined bore. Sprinco enhanced 5 coil extractor spring. Sprinco enhanced ejector spring.
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.
WEIGHT: 3 lb 12.5 oz
Included:
-Inspection sheet (documented results of how tight the tolerances are within the bolt carrier group and upper receiver group)
-Assembled upper receiver group
-Bolt Carrier group
-Barrel nut wrench
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 correct specifications.
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.
Each part in the bolt carrier group is gauged for 100% confidence in functionality. The headspace between the bolt and the barrel is measured for the tightest precision possible. Sprinco enhanced extractor and ejector springs for extreme durability. Each upper is assembled with the uppermost craftsmanship.
UPPER RECEIVER: Mil-Spec forged 7075 T6 aluminum. Upper will come lapped for a perfect fitment with the barrel.
BOLT CARRIER GROUP: Phosphate finish and chrome lined bore. Sprinco enhanced 5 coil extractor spring. Sprinco enhanced ejector spring.
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.
WEIGHT: 3 lb 12.5 oz
Included:
-Inspection sheet (documented results of how tight the tolerances are within the bolt carrier group and upper receiver group)
-Assembled upper receiver group
-Bolt Carrier group
-Barrel nut wrench
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 correct specifications.
