Rosco Barrels

Rosco Barrels Arm or Ally

Rosco Barrels

Rosco Barrels manufacturing lineage extends into the deepest areas of the U.S. Military and SOCOM units.  Their proven track record of manufacturing has allowed contract holders that outfit some of our most elite U.S. Military units.  The odds of you having a Rosco barrel equipped gun in your safe while you are reading this, or having deployed overseas with one is pretty high.   That’s a fact we are proud to share.

When accuracy and performance is all that matters to you, Rosco Barrels are the perfect option. Thousands of hours of research, design, and engineering go into the development of everything we manufacture. Rosco barrels undergo rigorous testing through our R&D team, which consists of SWAT/ LEO’s, U.S. Special Operation members and Competitive Shooters.  We like to keep things simple- a well-made product in return for your HARD EARNED money. We see no other alternative and neither should you.  As with all of our products, if you find a better deal, give us the chance to earn your business!

Always Demand the Best, Run Rosco!

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BLOODLINE SERIES

Our “Bloodline” series family is our hardest working barrel. Whether you are an occasional builder, tactical shooter, or Law Enforcement Officer we have a barrel that will fit your needs. These barrels were designed to take more punishment than most barrels. We accomplished this through the material selected for construction and the coatings added for corrosion resistance which also add extra surface hardening. All our Bloodline barrels are 4150 Chrome Moly Vanadium steel and made from scratch in our Rhode Island facility and start life as a blank piece of steel. They are then treated in a Melonite finish which will protect the barrel from the elements and increases the surface hardness. I.E. Hard Use Hardware!!!

Calibers: 5.56 NATO, 300 Blackout, 9mm

Prices starting at $105

PUREBRED SERIES

Our “Purebred” series is a testament to precision and quality manufacturing. We took a step back to see how we could create a barrel line that would be a culmination of all the lessons learned through years of making barrels for several OEM’s. The result is a barrel that will produce accurate results out of the box for any shooter that is looking to take their skills above and beyond. All our Purebred barrels are made from scratch in our Rhode Island facility and start life as a blank piece of 416R stainless steel. The barrel extensions are then micro polished before a Nickel Boron treatment is applied. The polished Nickel Boron will aid in corrosion resistance, surface hardness, and increased lubricity. I.E. Meticulous manufacturing leads to a precision instrument.

Calibers: 223 Wylde, 300 Blackout

Prices starting at $175


Typically, our customers will experience 1 MOA to sub MOA groups from our barrels. That however, cannot be guaranteed for every shooter. You must consider outside influencers like the ammunition used, the way the rifle was built, components used, shooter skill, and even environmental conditions. Another thing to consider is ammunition choice. If the ammunition that you run is inconsistent, over pressured, under pressured, remanufactured or was made by a guy out of his garage you will be adversely affecting the accuracy of your barrel. Also, we only will only ever recommend that you use factory new SAAMI approved ammunition in our barrels. Anything else will void our warranty. We will stand behind our barrels performing 1 MOA (or better) when Match Grade ammo is used, and all other factors have been met.

Yes we do, but we only machine one dimple that is perfectly centered and matched to a backspace of .295. We use the one dimple method because the offset between the screws varies greatly between Gas Block manufacturers. This way you are dead centered when you put on your gas block and ready to roll. Now the place where the second screw lands is not as important, and you could even have your local gunsmith add a second one if you wish. As always, we recommend that you use the proper tools and techniques when installing one of our barrels. If you do not have the correct tools always play it safe and seek out a competent gunsmith.

All our barrels are made 100% in house out of blank rods that we hand select from some of the best raw material specialists in the steel industry. Our Bloodline barrels are made from 4150 Chrome Moly Vanadium (CMV) steel and our Purebreds are made from true 416R Stainless Steel. We source all our raw materials from the USA, it is surprising how many “Made in America” barrel manufacturers source their materials from China. We stand behind our products with confidence, because we know what is going into them from start to finish.

Yes. We produce all our barrels from start to finish in-house. The process starts when the blank stock is delivered via flatbed trailer to our holding area within our facility and do not go into the production cycle until one of our in-house Quality Control (QC) folks inspects the lot. From there they are brought into the beginning of our production process and go through every station until it is turned into an awesome Bloodline or Purebred barrel.

Yes, we make barrel extensions in house from scratch. Once finished they are inspected by our QC department before they are released to our production department for final assembly. We then install all extensions after any coating has been applied so there is no chance of any heating process changing a torque value. All our AR15 extensions have M4 feed ramps, and our AR10 extensions are designed to SR25/ DPMS specs.

Both our Bloodline and Purebred barrels are button rifled and then polished to make sure that a perfect bore is produced every time. We do have the option for other methods of rifling, but we are currently only offering the Button method. Companies that are interested in specific barrel specs are encouraged to check out our OEM section and fill out the request form for more info.

Yes. All our blank stock is delivered pre-stress relieved and we preform additional stress relieving in-house during the manufacturing process. These are the extra steps that we take to ensure that the quality of the product is maintained from start to finish.

A well designed and machined crown can support the exiting projectile and enhance the grouping that a barrel will be able to produce. These are noted in the individual barrel descriptions as well as twist rates, gas systems, and thread patterns. We use the following barrel crowning methods for our Bloodline and Purebred barrels:

  1. Bloodline: For the Bloodline barrels we use a 10 degree “service” crown. It is a clean and consistently machined crown that will provide the exiting projectile the support needed once transferring into the turbulent environment under its own force. It is perfectly suited for duty carbines and hard use platforms as it provides the support that it needs to with out to much of an intricate method.
  2. Purebred: For the Purebred barrels we use a 10 degree “step” crown. This crown was designed to give the surface added protection by pushing it into (or creating a step onto) the barrel. It works especially well when you are using muzzle devices seeing as it creates a separation between the final point of the bore and the beginning of the muzzle device. When machined correctly this can be one of the most effective pieces to the precision barrel puzzle.

The typical lifespan of our barrels varies on a few of items. The terms in which a barrel will last comes down to the use, care, and environmental conditions for each shooter. A rifle barrel is a perishable item, much like an engine. If the engine is maintained well and not constantly abused it will last longer than most other engines and vice versa. If steady semi auto precision work is what you plan on doing, then you will enjoy one minute to sub minute groups for a while. Although, if your setup is more geared towards mag dumps you will just be speeding up the wear and tear process of any barrel. Another thing to consider is ammunition choice. If the ammunition that you run is over pressured, high velocity, or remanufactured you will be adversely affecting the life span of your barrel. Also, we only will only ever recommend that you use factory new SAAMI approved ammunition in our barrels. Anything else will void our warranty.