
Brownells
Overview
The Brownells AR-15 RIFLE RECEIVER EXTENSION & BUFFER KIT is a buffer tube assembly. Compare prices from multiple merchants and find the best deal.
Prices checked
Builders have been adding the Brownells AR-15 RIFLE RECEIVER EXTENSION & BUFFER KIT to their builds on GunPartPicker since April 2026. All time, it ranks #115 of the 183 buffer tube kits builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $72.59, so there haven't been real sales lately. Buying today, the lowest price is $72.59 at Brownells, which matches the best price we saw in September.
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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