The Proof Research Sendero featuring a 20" carbon barrel in an AI chassis system combines cutting-edge barrel technology with uncompromising precision and maximum durability for demanding long-range and precision shooting applications.

Proof Research is regarded as a global leader in carbon fiber barrel manufacturing and utilizes advanced aerospace-grade technology derived from military aviation. Their facility in northwestern Montana is equipped with state-of-the-art CNC machinery, manufacturing systems, and indoor test ranges capable of handling calibers up to .50 BMG. Development and testing are supported by thermal imaging systems and high-speed ballistic cameras capable of capturing up to one million frames per second.

In addition to significantly reduced weight, the carbon-wrapped barrel greatly minimizes heat-induced point-of-impact shift compared to conventional steel barrels.

⚠️ Proof Research carbon barrels are the only carbon barrels worldwide to have passed military certification standards.

Proof Research Carbon Barrel

• Approximately 50% lighter than comparable steel barrels with the same outer diameter
• Up to 60% faster cooling due to advanced material composition
• Resistant to extreme weather conditions, sand, dust, chemicals, and scratches
• Manufactured using the single-point cut rifling process for maximum precision
• 20" Sendero profile with 1:8" twist rate

Defiance Action System

• Extremely tight manufacturing tolerances
• Materials are heat-treated before machining to prevent distortion during later processing
• Wire EDM-machined extended locking lugs for exceptionally smooth bolt operation and maximum strength
• CNC-machined bolt made from pre-hardened 4340 chrome-moly steel
• Interchangeable bolt handle knob
• Durable M4/16-style extractor system
• Mil-Spec Picatinny rail with 20 MOA cant

Important Information Regarding Firearm Orders

Please note the following:

• Firearm orders can only be placed through our online shop
• During the checkout process, please upload the following documents:

• Valid hunting license (Jagdschein)
• Firearms ownership card (WBK), including pre-entry if applicable
• NWR IDs (see master data sheet)
• Valid ID card or passport

All documents must be:
• Valid
• Complete (front and back side)
• Clearly legible

After your order has been placed and the item is available, you will receive a proforma invoice. Once payment has been received, we will coordinate the delivery date with you. Alternatively, personal pickup is possible.

⚠️ Please ensure all required pre-entries are available where applicable.