Tacfire Buffer Tube KIT, Black - MAR049-B
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TacFire
Overview
The Tacfire Buffer Tube Kit is a complete parts kit designed for carbine-length builds, featuring a Mil-Spec buffer tube that ensures compatibility with a wide range of stocks and components. Constructed from durable 6061-T6 aluminum and finished with hardcoat anodizing, this assembly provides the necessary support for reliable cycling and durability in rigorous conditions. This buffer tube kit is commonly found in builds that utilize a carbine gas system and chamber 5.56 NATO caliber, making it a versatile choice for those looking to enhance their AR-15 setup.
Specifications
Available Merchants(6)
Prices checked
Price Alert
September 2026 on GunPartPicker
Tacfire Buffer Tube KIT, Black - MAR049-B ranked #17 of the 68 buffer tube kits builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #12 of the 179 buffer tube kits builders have added. Builds with this buffer tube assembly are mostly chambered in 5.56 NATO (81%), split between mid-length (49%) and carbine-length (27%) gas systems, 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 4 of the 6 retailers we track have it in stock. It dipped to $21.72 at BattleHawk Armory for a stretch in September 2026, well under its usual $24.96, so sales do come around. Buying today, the lowest price is $23.83 at KY Gun Company, above September's low of $21.72, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Buffer Tube Assembly Guide →Check it against the live catalog:
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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 Tacfire Buffer Tube Kit, Black - MAR049-B
| Build | Parts | Total |
|---|---|---|
 | 24 | $936.36 |
 | 14 | $1111.97 |
 | 22 | $823.31 |
 | 25 | $922.98 |
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