Tacfire A2-Style Mil-Spec Buffer Tube KIT, Black - MAR110
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TacFire
Overview
The Tacfire A2-Style Mil-Spec Buffer Tube Kit is a complete parts kit designed for builders looking to assemble a reliable rifle platform. This kit features a Mil-Spec buffer tube, which is essential for compatibility with standard AR-15 stocks and ensures a proper fit and function in your build. Typically, you'll find this buffer tube assembly in builds with a rifle-length gas system and chambered in 5.56 NATO, making it a solid choice for those aiming for a traditional rifle setup.
Specifications
Available Merchants(5)
Prices checked
Price Alert
October 2026 on GunPartPicker
Tacfire A2-Style Mil-Spec Buffer Tube KIT, Black - MAR110 ranked #31 of the 107 buffer tube kits builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #28 of the 212 buffer tube kits builders have added. Builds with this buffer tube assembly are mostly chambered in 5.56 NATO (79%), split between rifle-length (40%) and mid-length (30%) gas systems, and mostly AR-15 (94%).
It was in stock most times we checked in October 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $22.89 at Optics Planet for a stretch in October 2026, well under its usual $31.12, so sales do come around. Buying today, the lowest price is $22.89 at Optics Planet, 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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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 →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 A2-Style Mil-Spec Buffer Tube Kit, Black - MAR110
| Build | Parts | Total |
|---|---|---|
 | 20 | $1266.78 |
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