One Horse 7.5″ .300 BLK SOCOM Pistol 1:7 M-LOK Complete Upper

Discover the ultimate in compact firepower with the One Horse 7.5″ .300 BLK SOCOM Pistol 1:7 M-LOK Complete Upper. Engineered for tactical enthusiasts and home defense professionals, this upper delivers exceptional versatility in a short-barrel configuration, perfect for suppressed shooting and close-quarters maneuvers. Chambered in .300 Blackout, it balances subsonic stealth with supersonic punch, ensuring reliable performance without compromising on maneuverability.

Key Features

• 7.5-Inch SOCOM Barrel Profile: Provides optimal velocity for .300 BLK rounds while maintaining a lightweight, pistol-length design ideal for AR-15 pistol builds.
• 1:7 Twist Rate: Stabilizes a wide range of bullet weights, from 110-grain supers to 220-grain subs, enhancing accuracy and terminal ballistics.
• M-LOK Handguard: Modular rail system allows easy attachment of lights, lasers, and grips, customizing your setup for any mission.
• Nitride/Melonite Finish: Corrosion-resistant treatment extends barrel life and ensures smooth operation in harsh conditions.
• Complete Assembly: Includes bolt carrier group (BCG) and charging handle for immediate installation and reliability out of the box.

Technical Specifications

• Caliber: .300 Blackout (300 BLK)
• Barrel Length: 7.5 inches
• Gas System: Pistol-length for reduced recoil and improved control
• Barrel Material: High-quality steel with nitride finish
• Weight: Approximately 50 oz for balanced handling
• Compatibility: Standard AR-15 lower receivers

Why Choose the One Horse .300 BLK Upper?

This complete upper addresses common challenges in short-barrel AR builds, such as gas over-pressure and reliability with varied ammo types. The pistol-length gas system minimizes excessive recoil, making follow-up shots faster and more precise—crucial for defensive scenarios. Whether you’re navigating tight spaces or pairing it with a suppressor for whisper-quiet operation, this upper excels in delivering consistent cycling without the need for adjustable gas blocks. Built to mil-spec standards, it offers durability that outpaces budget alternatives, ensuring your investment performs when it matters most.

Elevate your AR pistol or SBR project with the One Horse 7.5″ .300 BLK SOCOM Complete Upper. Ready to assemble and dominate—secure yours and experience the difference in tactical precision.

Frequently Asked Questions

Q: Is the 1:7 twist rate suitable for both subsonic and supersonic .300 BLK ammunition?
A: Yes, the 1:7 twist provides excellent stabilization for a broad spectrum of .300 BLK bullets, ensuring reliable performance across supersonic and subsonic loads.

Q: Does this upper work well with suppressors?
A: Absolutely. The short barrel and pistol gas system pair seamlessly with .300 BLK suppressors, reducing noise and muzzle flash for discreet operation.

Q: What makes the SOCOM profile beneficial for this build?
A: The SOCOM profile offers a thicker contour under the handguard for enhanced rigidity and heat dissipation, while tapering for weight savings—ideal for sustained use in dynamic environments.