AR-10 – .300 RSAUM

(1 customer review)


AR-10 – .300 RSAUM


Out of stock


AR-10 .300 RSAUM Custom Barrel – Precision Perfected for Your AR-10 Rifle

Welcome to Dead Shot Barrels, your ultimate destination for precision and performance with our AR-10 .300 RSAUM custom barrels. Discover the excellence of the .300 Remington SAUM (Short Action Ultra Magnum) round and our dedication to delivering unparalleled accuracy and shooting satisfaction.

Why Choose the .300 RSAUM Round: Superior Power and Accuracy

The .300 RSAUM is a testament to impressive power and accuracy, boasting remarkable ballistic performance and potent stopping power. It’s a preferred choice for shooters and hunters who demand both long-range precision and effective terminal ballistics. Whether you’re aiming for extreme accuracy or pursuing challenging game, the .300 RSAUM delivers the energy and precision you require.

Customization Beyond Expectations – Your AR-10, Your Way

At Dead Shot Barrels, we pride ourselves on empowering shooters with unparalleled customization options. Our AR-10 .300 RSAUM custom barrels offer a plethora of choices to create your ideal barrel:

  • Brand – Material – Twist: Choose between CM – 1:10,  Green Mountain – SS – 1:10 or Lothar Walther – SS – 1:10  to start your custom build.
  • Barrel Length: Tailor your rifle for different shooting scenarios with a range of barrel lengths.
  • Gas System Lengths: Enhance gas pressure and cycling efficiency with various gas system length options.
  • Gas Tubes: Ensure reliability and performance with precision-engineered gas tubes.
  • Profile and Gas Block Size: Achieve the ideal balance and accuracy with choices like SOCOM .750, HBAR .750, HBAR .875, and Bull .936.
  • Optional Gas Blocks: Fine-tune gas flow and control with your preference of standard or adjustable gas blocks.
  • Fluting Options: Customize aesthetics and reduce weight with fluting styles like 6 Groove, Diamond, or Spiral.
  • Thread/Crown Options: Personalize your barrel’s appearance and performance with options such as Target Crown, Magna Port, Gill Cut, and 5/8″x24 threads.
  • Optional Bolts: Ensure precise alignment with our premium bolts or submit your current bolt for a perfect fit.
  • Cerakote Finish: Protect your barrel and express your style with a durable Cerakote color of your choice.

Stainless Steel Excellence – Uncompromising Smoothness with SS Ground Finishing

For the pinnacle of refinement, choose our stainless steel option enhanced with SS Ground Finishing. Experience a smooth, mirror-like surface that looks stunning in the field or the safe. Take it a step further with a striking 2-tone Ground Finish by pairing a stainless steel barrel, fluting, and your preferred Cerakote color.

Fast Turnaround Time: Your Perfect Barrel, Delivered

We understand the anticipation of upgrading your rifle, which is why our turnaround time for complete assemblies is 5-10 weeks. Your patience will be rewarded with a custom AR-10 .300 RSAUM barrel, setting new standards in shooting excellence.

Elevate Your Shooting – Order Your AR-10 .300 RSAUM Custom Barrel Today!

Elevate your AR-10 rifle to new heights with Dead Shot Barrels’ AR-10 .300 RSAUM Custom Barrel. Experience unparalleled precision, power, and personalization possibilities. Order now and redefine your shooting potential!

Turnaround Time:


Compatible with Armalite and DPMS platform rifles.

***Please make sure to use a DPMS style BCG.***

Try our Cerakote “Stainless” finish. It looks identical to bead blast, but doesn’t soak up oils or scratch easily.



If you placed an order via credit card, the fees charged to us by our merchant account will be deducted from your refund.
Custom barrels are warrantied but not subject to full refunds.

1 review for AR-10 – .300 RSAUM

  1. COLIN KULAS (verified owner)

    Bought a 22″ socom barrel, had to clean the chamber using twice Shot reloads but after that runs great, very accurate most break in was unnecessary very clean rifling

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