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Leapers
Overview
The Leapers UTG Pro Mil-Spec 6 Position Receiver Extension Tube Kit is a complete buffer tube assembly designed for carbine-length applications. Made from 6061-T6 aluminum, this Mil-Spec buffer tube features six adjustable positions to provide customizable length of pull, which is essential for achieving optimal ergonomics for different shooters. This product is commonly found in builds utilizing a mid-length gas system and chambered in 5.56 NATO, making it a practical choice for those looking to enhance their AR-15 configuration.
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Leapers UTG PRO Mil-Spec 6 Position Receiver Extension Tube KIT - Black was the eighth most added buffer tube assembly on GunPartPicker in August 2026, behind the Timber Creek AR Buffer Tube, Black - AR BT BL, with about 3% of all buffer tube kits added to builds. Up from #9 in July. Builds with this buffer tube assembly are nearly all chambered in 7.62x39mm, nearly all on carbine-length gas, and nearly all AR-15.
It was in stock most days in August 2026, and today 2 of the 4 retailers we track have it in stock. Prices barely moved in August 2026, holding around $37.97, so there haven't been real sales lately. Buying today, the lowest price is $24.10 at Sportsmans Outdoor Superstore, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every buffer tube assembly by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Assembly Guide →The part most often added in each category by the 101 builds that include this one
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Builds in the community that include the Leapers Utg Pro Mil-Spec 6 Position Receiver Extension Tube Kit - Black
| Build | Parts | Total |
|---|---|---|
 | 20 | $803.49 |
 | 18 | $2089.71 |
 | 21 | $1342.17 |
 | 20 | $945.09 |
 | 19 | $1405.68 |
 | 24 | $3516.61 |
 | 27 | $3074.31 |
1 global rating
Top reviews
Leapers UTG Pro mil-spec 6-position buffer tube kit has the profile I wanted for a budget build. Aluminum tube threads to a standard castle nut. End plate, castle nut, and spring included. Locks at each position positively.
