Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523
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Proof Research
Overview
The Proof Research AR-Type Barrel measures 12.50 inches in length and is designed for the 300 Blackout caliber, featuring a lightweight profile that aids in maneuverability and overall handling. Its pistol-length gas system ensures reliable cycling with subsonic ammunition while the 1:8 twist rate stabilizes heavier projectiles, making it suitable for a variety of shooting applications. This barrel is often found in builds that prioritize compactness and versatility, particularly for those looking to optimize their AR platform for specific tactical or hunting scenarios.
Specifications
Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523
Available Merchants(7)
Prices checked
Price Alert
Build history on GunPartPicker
Builders have been adding the Proof Research AR-Type Barrel 12.50" for AR-Style, Natural - 100523 to their builds on GunPartPicker since March 2026. All time, it ranks #291 of the 926 barrels builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, but today 3 of the 7 retailers we track have it in stock. The best price drifted down from $999 to $951.49 over October 2026 without a real sale. Buying today, the lowest price is $951.49 at Ammunition Depot, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Wilson Combat AR-15 Billet Upper Receiver
Phase 5 Tactical 10.5 Lo-PRO Slope Nose Free Float Quad Rail Black
POF USA Strike Eagle Ambidextrous AR-15 Charging Handle
Aero Precision M4E1 Stripped Lower Receiver - Kodiak Brown Anodized
JP Enterprises .750 Adjustable Gas Block - Stainless
Huxwrx 556 QD Flash Hider - 1/2x28
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
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