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VLTOR
Overview
The Vltor Weapon Systems Mil-Spec Receiver Extension is a carbine buffer tube designed to fit standard Mil-Spec components, ensuring compatibility with a wide range of stocks. Made from aluminum, this lightweight yet sturdy assembly provides the necessary support for your buffer system, enabling reliable cycling in your AR-15 setup. This buffer tube is commonly found in builds utilizing a rifle gas system chambered in 5.56 NATO, making it a solid choice for those looking to enhance their firearm's performance.
VLTOR Weapon Systems Mil-Spec Receiver Extension ranked #29 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 #50 of the 63 buffer tubes builders have added. Builds with this buffer tube are mostly chambered in 5.56 NATO (62%, then .223 Wylde 14%), split between carbine-length (43%) and rifle-length (24%) gas systems, and mostly AR-15 (93%).
It was hard to find in September 2026, in stock on only 11 of the 25 days we checked, and today none of the 2 retailers we track has it in stock right now. Prices barely moved in September 2026, holding around $46.76, so there haven't been real sales lately. Listed prices start at $46.76 at Primary Arms for when it comes back.
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 Vltor Weapon Systems Mil-Spec Receiver Extension
| Build | Parts | Total |
|---|---|---|
 | 25 | $1783.69 |
 | 29 | $2716.18 |
 | 32 | $7207.88 |
 | 30 | $7734.61 |
 | 37 | $18666.75 |
 | 26 | $3242.58 |
 | 24 | $1999.86 |
 | 25 | $2314.45 |
2 global ratings
Top reviews
Needed a standard mil-spec buffer tube for a new upper that came with a rifle gas system. The Vltor fit the bill perfectly. Aluminum construction keeps it light but still feels super sturdy. Paired it with a Sprinco spring and an H2 buffer, and the recoil impulse is super consistent. Great part.
Got this Vltor tube for my new 5.56 rifle build. Running a rifle-length gas system and needed a bombproof carbine tube. This thing delivers. Zero slop with my BCM stock, cycles like a dream. No weird hangups, just smooth operation. Highly recommend for any serious build.
