Expo Arms Mil-Spec 6-Position Buffer Tube - 7075 Aluminum
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Expo Arms
Overview
The Expo Arms Mil-Spec 6-Position Buffer Tube is designed specifically for carbine builds, utilizing a durable 7075-T6 aluminum construction that ensures strength while keeping weight manageable. This tube supports a Mil-Spec design, allowing for a wide range of stock options and providing adjustability for length of pull, which is crucial for optimizing ergonomics and comfort during use. You will typically find this buffer tube in carbine gas system builds chambered in 5.56 NATO, making it a versatile choice for standard AR-15 configurations.
Specifications
Available Merchants(1)
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Price Alert
October 2026 on GunPartPicker
Expo Arms Mil-Spec 6-Position Buffer Tube - 7075 Aluminum ranked #16 of the 40 buffer tubes builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #38 of the 71 buffer tubes builders have added. Builds with this buffer tube are mostly chambered in 5.56 NATO (63%, then 300 Blackout 25%), split between carbine-length (33%) and mid-length (33%) gas systems, and mostly AR-15 (92%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today the one retailer we track has it in stock. Prices barely moved in October 2026, holding around $23.95, with no real sale all month. Buying today, the lowest price is $23.95 at Primary Arms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Expo Arms Mil-Spec 6-Position Buffer Tube - 7075 Aluminum
| Build | Parts | Total |
|---|---|---|
 | 13 | $1151.17 |
 | 24 | $721.07 |
 | 25 | $914.24 |
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