UTG PRO AR15 6-Position Receiver Extension Tube, Mil-Spec, FDE Cerakote

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AR15 · Mil-Spec · 6 Positions · FDE
UTG PRO TLU001D: Select Receiver Extension Tube cleanly by standard When choosing a Receiver Extension Tube, the diameter standard matters first, not the color. The TLU001D is clearly listed by the manufacturer as a 6-position Mil-Spec tube in Flat Dark Earth Cerakote and designed for Carbine Buffers and Springs.

Does this fit your setup?


Fits well if … … you combine a Mil-Spec-compatible adjustable stock with a 6-position receiver extension.
… FDE Cerakote and a 6061-T6 aluminum tube are deliberately meant to match your AR setup.


Probably doesn’t fit if … … your existing stock is explicitly designed for Commercial-Diameter tubes.
… you expect a complete buffer kit: The product role is the receiver extension tube, not automatically spring, buffer, castle nut, and end plate.


Features and practical effect


Mil-Spec diameter This is the critical purchase detail. A commercial stock must not be assumed to fit just because of similar appearance.


6 positions The tube provides six locking positions. The actually usable length adjustment also depends on the mounted stock.


6061-T6 aluminum The manufacturer states CNC-machined 6061-T6 aluminum with rolled threads. Entsc
heidend bleibt eine saubere, fachgerechte Montage ohne beschädigte Gewindeflanken.


FDE Cerakote The specific SKU TLU001D is the FDE version. This prevents confusion with the black base variant or complete tube kits.


Limits and Avoiding Wrong Purchases
Check before ordering: Mil-Spec compatibility of the stock, required buffer/spring system, and whether you only need the tube or a complete kit. The manufacturer lists TLU001D as a tube; a separate kit has a different product code.
Technical Data with Practical Interpretation


SKU / MPN TLU001D – FDE Cerakote variant of the 6-position Mil-Spec Receiver Extension Tube.


Standard Mil-Spec diameter; compatible with corresponding collapsible Mil-Spec stocks.


Material / Weight 6061-T6 aluminum; manufacturer weight 3.7 oz / approx. 105 g.


Dimensions Overall length 7.25″; manufacturer states 7″ tube depth. The actual stock length depends on the stock.


Buffer System Designed for carbine buffers and springs. The manufacturer specifies AR15 carbine and suitable short buffer configurations; system parts should not be mixed arbitrarily.


Finish Flat Dark Earth Cerakote – purchase relevant for exactly this SKU.


Scope of Delivery
1 × UTG PRO AR15 6-position Receiver Extension Tube, Mil-Spec, FDE Cerakote, SKU TLU001D. Buffer, spring, stock, castle nut or end plate should only be considered included if separately listed in the offer.
FAQ
Is TLU001D Mil-Spec or Commercial? Mil-Spec. This is confirmed by the official Leapers product page for exactly this SKU. Is this a complete buffer tube kit? No. The specific product code refers to the receiver extension tube. Complete kits are listed separately. Does it fit every adjustable AR stock? No. The stock must fit the Mil-Spec diameter; commercial versions are not automatically compatible.

Black Raptor · SKU instead of Guesswork
TLU001D is clearly Mil-Spec, 6-position, and FDE Cerakote. Those who need exactly these three points get a clearly identified tube; those looking for a complete kit should not order the same SKU.