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Geissele
Overview
The Geissele Automatics Premium Mil-Spec Buffer Tube Assembly is a comprehensive parts kit designed to ensure reliable function and performance in your AR-15 build. Featuring a Mil-Spec buffer tube, this assembly provides the necessary support and compatibility for a wide range of stocks and is finished in a sleek black color for a cohesive look. This buffer tube assembly is commonly used in builds featuring a carbine gas system and chambered for 5.56 NATO, making it a solid choice for builders aiming for optimal reliability and operation.
Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H1 - Black
Prices checked
Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H1 - Black ranked #15 of the 107 buffer tube kits builders added on GunPartPicker in October 2026, behind the Strike Industries AR Mil-Spec Buffer Housing for Mil-Spec Buffers, Red - SI-AR-BH-MIL-RED, with about 2% of all buffer tube kits added to builds. Down from #9 in September. Builds with this buffer tube assembly are mostly chambered in 5.56 NATO (78%, then .223 Wylde 13%), split between mid-length (57%) and carbine-length (29%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 4 of the 6 retailers we track have it in stock. Buying today, the lowest price is $114.99 at Ammunition Depot, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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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Builds in the community that include the Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H1 - Black
| Build | Parts | Total |
|---|---|---|
![]() | 27 | $2121.30 |
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