Phase 5 Weapon Systems — Hex-2™ Buffer Tube Assembly (HEX-2-C) — Black 7075-T7 Aluminum — AR-Pistol Platform — UPC 813318020284
Meta (SEO) short description: Phase 5 Hex-2-C complete pistol buffer tube assembly — heavy-duty 7075-T7 billet aluminum, 7.4" overall length, pistol/AR-Pistol focused design with foam pad and hardware included. Ideal for builders who want a rugged, low-profile hex-shaped buffer tube that accepts popular pistol stabilizing braces. UPC 813318020284. Phase5 WSI+1
Product Overview
The Phase 5 Hex-2™ Buffer Tube Assembly (HEX-2-C) is a purpose-built complete buffer tube kit engineered for AR-pistol builds. Machined from USA-certified 7075-T7 billet aluminum, the Hex-2 blends high strength, a distinctive hexagonal aesthetic, and practical pistol-centric ergonomics. This complete assembly ships with the essentials you need to finish a quality pistol build: buffer tube, carbine buffer, Phase 5 enhanced buffer spring, castle nut, end plate, and a nitrile foam pad — all in a matte black anodized finish. Phase5 WSI+1
Key Features & Benefits
7075-T7 Billet Aluminum Construction: CNC-machined from USA-certified 7075-T7 for superior strength and durability compared with standard stamped tubes, while remaining lightweight. Phase5 WSI+1
Purpose-Built Pistol Length (≈7.4"): The Hex-2’s compact overall length suits AR-pistol configurations and stabilizing brace setups where a shorter tube and reduced length-of-pull are desired. Phase5 WSI+1
Hexagonal Rear Profile: The unique hex shape provides a striking, tactical look and an improved real-world gripping surface compared to round-tube alternatives. totalimpactguns.com
Complete Kit (HEX-2-C): Ship-ready assembly includes a carbine buffer, Phase 5 enhanced buffer spring, castle nut, end plate, and nitrile foam pad — reducing the need to source separate parts. Phase5 WSI+1
Brace & Pad Compatibility: Designed to accept Phase 5’s nitrile foam pad (included) and to be compatible with many pistol stabilizing braces—such as the SB15/SB Tactical mini braces—when used per brace manufacturer guidance. Confirm brace compatibility for your build before purchase. Midwest Gun Works+1
Made in the USA: Manufactured and assembled in the United States to Phase 5’s quality standards. Phase5 WSI
Technical Specifications
Model / Part: Hex-2™ Complete Pistol Buffer Tube Assembly (HEX-2-C). Phase5 WSI
UPC: 813318020284. OpticsPlanet
Material: 7075-T7 billet aluminum (CNC machined). Phase5 WSI
Overall Length: Approximately 7.4 inches (pistol-length profile). Phase5 WSI
Finish: Black anodized (matte). Cabela's
Included: Buffer tube, carbine buffer, Phase 5 enhanced buffer spring, castle nut, end plate, nitrile foam pad. (Confirm retail packaging for exact contents.) Phase5 WSI+1
Who Should Buy the Hex-2-C
AR-pistol builders who want a premium billet buffer tube that increases rigidity and visual appeal. totalimpactguns.com
Shooters planning to mount a pistol stabilizing brace or nitrile pad for cheek support and improved control. Midwest Gun Works
Anyone upgrading from polymer or stamped tubes to a machined aluminum solution for long-term durability and refined fit/finish. The Civil War
Compatibility & Installation Notes
Braces: The Hex-2 is designed to work with many pistol-brace solutions that accept a 1.2" round rear section or mounting pad—always follow brace manufacturer installation instructions and confirm compatibility prior to fitting. totalimpactguns.com+1
Buffers & Springs: The HEX-2-C package includes a carbine buffer and Phase 5 enhanced spring sized for pistol configurations; some calibers (especially suppressed or alternate-buffer 9mm/.300 builds) may benefit from tuned buffer weights — consult your gunsmith or Phase 5 fitment recommendations. Phase5 WSI+1
Receiver Fit: Installs like a standard AR receiver extension — use correct torque specs for castle nut and verify end plate alignment. If you’re unsure, have a qualified armorer perform installation. Phase5 WSI
Practical Performance & Real-World Use
The Hex-2’s billet design reduces flex and provides a rock-solid cheek weld when paired with a pad or brace, improving perceived stability in rapid transitions and when shooting from unconventional positions. The hex profile also helps present a confident, rugged aesthetic—useful for tactical builds, range rigs, and show builds alike. Phase 5’s foam pad offers quick, minimal cushioning for comfortable shouldering without adding bulk. The Civil War+1
Care & Maintenance
Wipe anodized surfaces with a soft cloth and light gun oil on threaded interfaces.
Periodically check castle nut torque and end plate security after initial break-in and following vigorous use.
Inspect buffer spring for wear and replace if you detect flattening or loss of tension. Regular maintenance preserves reliable cycling and safety. Cabela's
Buying & Identification
SEO-Optimized Closing (natural keyword use)
Upgrade your AR-pistol build with the Phase 5 Weapon Systems Hex-2™ Complete Buffer Tube Assembly (HEX-2-C) — a 7075-T7 billet aluminum, pistol-length buffer tube that brings durability, style, and practical brace compatibility to modern AR pistol platforms. With an included buffer, enhanced spring, castle nut, end plate, and nitrile foam pad, the Hex-2-C reduces parts hunting and gets you build-ready faster. Whether you’re building for function, form, or both, the Hex-2 offers a premium machining, a compact 7.4" profile, and the mounting versatility serious builders demand. Confirm UPC 813318020284 and fitment before purchase. Phase5 WSI+2totalimpactguns.com+2
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