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Leapers
Overview
The Leapers UTG Pro Mil-Spec 6-Position Receiver Extension Tube is a carbine buffer tube designed to accommodate a variety of stock configurations, providing six positions for length adjustment. Made from durable 6061-T6 aluminum, this Mil-Spec tube ensures a robust connection between your lower receiver and stock, essential for reliable operation. This buffer tube is often found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a versatile choice for many AR-15 configurations.
Prices checked
Leapers UTG PRO Mil-Spec 6-Position Receiver Extension Tube ranked #18 of the 49 buffer tubes builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #19 of the 63 buffer tubes builders have added. Builds with this buffer tube are mostly chambered in 5.56 NATO (73%), mostly on mid-length gas (67%, then carbine-length 22%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 3 of the 5 retailers we track have it in stock. Prices barely moved in September 2026, holding around $21.97, so there haven't been real sales lately. Buying today, the lowest price is $13.47 at Sportsmans Outdoor Superstore, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every buffer tube by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Guide →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Leapers Utg Pro Mil-Spec 6-Position Receiver Extension Tube
| Build | Parts | Total |
|---|---|---|
 | 22 | $1174.39 |
 | 28 | $1117.02 |
 | 20 | $1483.76 |
 | 27 | $2231.28 |
 | 21 | $647.35 |
 | 14 | $777.74 |
 | 25 | $1368.02 |
2 global ratings
Top reviews
Leapers UTG Pro mil-spec 6-position buffer tube has the standard QD socket. The release lever was stiff initially - took some adjustment cycles to break in. Now slides positively. Threads to a standard castle nut. Functional budget option.
works great. paint on the lever scratched easily
