LBE Unlimited Mid-Length Gas Tube — 304 Stainless Steel — AR-10 (.308) (Model ARGT308, UPC: 765857617589)

Upgrade the gas system on your AR-10 build with a precision-formed, corrosion-resistant mid-length gas tube engineered for consistent cycling and long-term durability. The LBE Unlimited ARGT308 is manufactured from 304 stainless steel and sized specifically for AR-10/.308 platforms using a mid-length gas system. Whether you’re building a match rifle, patrol carbine, or precision hunting rifle, this gas tube delivers the correct timing and rugged construction your upper needs for dependable performance.

Why the ARGT308 Matters

The gas tube is a small but mission-critical component of a direct-impingement rifle. Correct gas-tube length directly affects dwell time, bolt carrier group velocity, and overall reliability. The ARGT308 is designed to the dimensional tolerances AR-10 builders expect, providing consistent gas flow, resistance to corrosion, and dimensional stability under heat and repeated firing.

Key Features & Benefits

• Model: ARGT308

• UPC: 765857617589

• Material: 304 Stainless Steel — corrosion-resistant and thermally stable for demanding use.

• Length: Mid-length — optimized for AR-10 barrels where the gas port is positioned between carbine and rifle length.

• Platform: AR-10 / .308 Winchester compatible uppers (confirm gas system length and gas block fit before purchase).

• Construction: Precision-formed tubing with flared/finished ends for secure roll-pin retention and smooth gas flow.

• Durability: Stainless construction resists pitting and maintains geometry after heat cycles and heavy round counts.

• Drop-In Replacement: Designed to be a direct swap for worn or incorrect-length mid-length gas tubes.

Performance & Compatibility

• Correct Gas Timing: Mid-length gas systems are popular on AR-10 builds for a balanced recoil impulse and reliable cycling across ammunition types. The ARGT308 helps achieve that intended performance by matching proper tube length to barrel gas-port location.

• Material Advantage: 304 stainless steel maintains dimensional stability and resists corrosion and heat-related deformation better than many mild steels, making it ideal for high-round-count training or duty use.

• Platform Fit: Works with most AR-10 uppers and mid-length gas blocks designed for .308-pattern barrels. Always verify your barrel’s gas-port location and thread/fitment requirements.

Installation Notes & Armorer Tips

1. Safety First: Always clear the firearm and verify it is unloaded before starting any work.

2. Orientation: Slide the gas tube through the gas block and align the roll-pin hole to the upper receiver’s gas port before pinning. Confirm correct indexing prior to roll-pin installation.

3. Roll Pin Installation: Use a proper roll-pin punch and vise or gas-block tool to drive the roll pin squarely. Avoid hammering at an angle to prevent tube deformation.

4. Gas Block Fitment: Confirm the gas block seats flush and the set screws or clamp hardware are tightened per the manufacturer’s specifications. Some builders prefer to dimple the barrel where the set screw contacts for maximum retention.

5. Function Check: After installation, perform a dry function check and then a short live-fire verification from a safe range to confirm proper cycling and gas pressure.

6. When in Doubt: If you’re unsure about gas system timing, roll-pin installation, or indexing, consult a qualified gunsmith or armorer.

Tuning & Troubleshooting

• Over-Gassed/Under-Gassed Symptoms: If the rifle is over-gassed (rough recoil, increased wear, hard ejection) or under-gassed (failure to cycle, light ejection), inspect gas tube alignment, gas port cleanliness, and gas block seating. Gas system tuning often involves adjusting gas block sizing, buffer weight, and spring strength.

• Cleaning: Periodic cleaning of the gas tube bore will prevent carbon buildup that can alter gas flow. Use appropriate brushes and solvents and avoid bending the tube during cleaning.

• Pairing Components: For optimal reliability, match the ARGT308 with the correct gas block, barrel gas-port size, and buffer/spring combination for your BCG weight and ammunition choice.

Maintenance & Care

• Inspect the gas tube regularly for dents, kinks, or excessive carbon accumulation.

• Clean internal bore during routine rifle maintenance to maintain consistent gas flow.

• Replace the gas tube if you detect deformation, cracks, or compromised roll-pin retention.

• The 304 stainless finish eases cleaning and resists corrosion, but regular maintenance will extend service life.

Ideal Applications

• AR-10 mid-length builds for balanced recoil and smooth cycling

• Precision shooting platforms where consistent gas timing improves reliability

• Duty rifles and patrol guns requiring corrosion-resistant components

• Short to mid-length barrels that benefit from mid-length gas timing characteristics

Technical Specifications (At-a-Glance)

• Model: ARGT308

• UPC: 765857617589

• Material: 304 Stainless Steel

• Type: Mid-Length Gas Tube (AR-10 / .308)

• Finish: Natural stainless (bright/polished)

• Compatibility: AR-10 uppers using mid-length gas systems — confirm barrel and gas block specs before installation

• Included: 1 × LBE Unlimited Mid-Length Gas Tube (roll pin may be included or sold separately depending on kit)

Final Thoughts

Small parts make a big difference. The LBE Unlimited ARGT308 Mid-Length Gas Tube brings precision manufacturing and stainless durability to your AR-10 build—helping ensure proper gas timing, improved longevity, and reliable cycling across ammunition types. For builders and armorers seeking a corrosion-resistant, mission-capable mid-length gas tube for .308 platforms, this is a dependable, drop-in solution.

The End