Griffin Armament .300 Blackout Hedp AR-15 Barrel - 9.5"
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Griffin Armament
Overview
The Griffin Armament .300 Blackout HEDP AR-15 barrel measures 9.5 inches in length and features a medium profile, making it a solid choice for compact builds. Designed for the .300 Blackout caliber, it utilizes a pistol-length gas system, which is ideal for maximizing reliability and performance in shorter configurations. With a twist rate of 1:8 and a thread pitch of 5/8x24, this barrel is well-suited for shooters looking to optimize their setup for both supersonic and subsonic ammunition. This barrel commonly appears in builds focused on the .300 Blackout caliber, particularly those utilizing a pistol gas system for enhanced maneuverability.
Specifications
August 2026 on GunPartPicker
Griffin Armament .300 Blackout Hedp AR-15 Barrel - 9.5" ranked #97 of the 298 barrels builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #70 of the 763 barrels builders have added.
It was hard to find in August 2026, in stock on only 3 of the 7 days we checked, and today the one retailer we track has it in stock. The best price drifted down from $280.25 to $246.95 over August 2026 without a real sale. Buying today, the lowest price is $246.95 at Optics Planet, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Frequently Built With
The part most often added in each category by the 7 builds that include this one
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Griffin Armament MK2 AR-15 Ambidextrous Stripped Lower Receiver Flat Dark Earth
Triggertech AR Diamond Trigger Flat Black
Geissele Automatics MK14 Super Modular Rail Handguard 9.3" M-LOK Ddc
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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