Z
Zaccaiah762happy overall
Reviewed on April 29, 2026Verified with Build
fit was tight to the upper, took some persuasion to seat properly
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FAXON Firearms 300 AAC Blackout 1-8 Twist 10.5" Barrel
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Faxon Firearms
Overview
The Faxon Firearms 300 AAC Blackout 10.5" barrel is designed for maximum versatility in compact builds, featuring a pencil profile that keeps the overall weight down while maintaining structural integrity. With a 1:8 twist rate, this barrel is optimized for stabilizing a variety of projectile weights, making it a solid choice for both subsonic and supersonic loads. The pistol-length gas system and .750 gas block diameter ensure reliable cycling in shorter AR-15 configurations. This barrel commonly appears in builds focused on 300 Blackout for applications such as home defense and tactical use.
Specifications
MPN15A38P10NGQ
FinishBlack
Barrel ProfilePencil
Gas System LengthPistol
Gas Block Diameter.625
Barrel Length15
CoatingNitride
Twist Rate1:8
Thread Pitch5/8x24
Caliber300 Blackout
August 2026 on GunPartPicker
FAXON Firearms 300 AAC Blackout 1-8 Twist 10.5" Barrel ranked #12 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 is the tenth most added barrel on the site. Builds with this barrel are nearly all chambered in 300 Blackout, nearly all on pistol-length gas, and mostly AR-15 (86%, then AR-10 14%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 8 retailers we track have it in stock. It dipped to $129 at GritR Sports for a stretch in August 2026, well under its usual $151 to $151.80, so sales do come around. Buying today, the lowest price is $118.44 at Sportsmans Outdoor Superstore, 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 60 builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Upper Receiver$129 · out of stockin 13 builds
Wilson Combat AR-15 Lower Receiver Forged
Lower Receiver$43in 6 builds
Midwest Industries Suppressor Series M-LOK AR-15 Handguard - 10.5"
Handguard$155in 9 builds
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Charging Handle$69 · out of stockin 12 builds
Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze
Bolt Carrier Group$218in 5 builds
WMD Guns AR-15 Gas Tube Nitromet Mid-Length
Gas Tube$14in 8 builds
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.
85.7%
AR-1585.7%
AR-1014.3%
Builds Featuring This Part
See all 10 →Builds in the community that include the Faxon Firearms 300 Aac Blackout 1-8 Twist 10.5" Barrel
| Build | Parts | Total |
|---|---|---|
 | 19 | $627.90 |
 | 14 | $1311.83 |
 | 13 | $4694.94 |
 | 26 | $4580.16 |
 | 33 | $6460.53 |
 | 14 | $999.96 |
 | 31 | $3301.49 |
 | 16 | $885.12 |
 | 17 | $1965.62 |
 | 10 | $1212.04 |
Customer reviews
4.0out of 5
1 global rating
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