Description
UTG Pro Receiver Extension Tube — Mil-Spec AR-15, 6-Position, Black Hardcoat Anodized
Solid platform. Precise fit.
The UTG Pro Receiver Extension Tube is a mil-spec 6-position buffer tube engineered to give your AR-15 a reliable, rock-solid mounting point for collapsible stocks. Precision CNC-machined to tight mil-spec dimensions, it accepts standard mil-spec carbine stocks and delivers a consistent fit and feel under recoil. Finished in a black Type III hardcoat anodize for corrosion resistance and long life, the UTG Pro tube is a dependable choice when you want durable performance without breaking the bank.
Key Features
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Mil-Spec 6-Position: Six indexed positions for adjustable cheek weld and overall length of pull.
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Precision Machined: CNC machined to true mil-spec dimensions for consistent, secure engagement with mil-spec collapsible stocks.
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Aircraft-Grade Aluminum: Constructed from aircraft-grade aluminum (manufacturers list 6061-T6 or 7075-T6 in certain SKUs) for a balance of strength and light weight.
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Hardcoat Finish: Matte black Type III hardcoat anodize (Class II) for corrosion resistance and a tactical matte look.
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Kit Options Available: Some SKUs include buffer, recoil spring, end plate, and castle nut for easy installation (verify product model/kit contents).
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Made in USA / Tight Tolerances: Produced to strict tolerance controls for dependable fit and function.
Why It Stands Out
The UTG Pro tube pairs mil-spec reliability with an upgraded hardcoat anodized finish—offering a durable mounting solution for collapsible stocks while keeping weight low. Its precise machining helps eliminate wobble and fitment issues common with lesser tubes, and available kit versions let you finish a lower receiver quickly with quality components.
Perfect For
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Builders completing an AR-15 lower who need a true mil-spec buffer tube.
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Shooters who want a corrosion-resistant, hardcoat-anodized tube that accepts all standard mil-spec carbine stocks.
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Budget-minded builds that still demand reliable fit and proven materials.
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