Proof Research 11.50" Stainless AR-Type Barrel for AR-Style Rifles - Elevate Your Accuracy - 100387
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Proof Research
Overview
The Proof Research 11.50" Stainless AR-Type Barrel is designed for AR-style rifles chambered in 6.5 Grendel, featuring an M4 profile that balances weight and performance. With a 1:8 twist rate, this barrel stabilizes a wide range of bullet weights effectively, while the 5/8x24 thread pitch allows for compatibility with various muzzle devices. This barrel is often found in builds utilizing a carbine gas system, making it a solid choice for those looking to enhance accuracy in their .223 Wylde configurations.
Specifications
Proof Research 11.50" Stainless AR-Type Barrel for AR-Style Rifles - Elevate Your Accuracy - 100387
Available Merchants(4)
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Build history on GunPartPicker
Builders have been adding the Proof Research 11.50" Stainless AR-Type Barrel for AR-Style Rifles - Elevate Your Accuracy - 100387 to their builds on GunPartPicker since March 2026. All time, it ranks #241 of the 816 barrels builders have added.
It was in stock most days in September 2026, and today 3 of the 4 retailers we track have it in stock. The best price crept up from $483.99 to $569 over September 2026. Buying today, the lowest price is $474.99 at Palmetto State Armory, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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