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Heckler & Koch
Overview
The Heckler & Koch AR-15/HK416 Carbine Buffer Tube is designed as a Mil-Spec tube, ensuring compatibility with a wide range of carbine stocks. This tube is essential for the proper function of your buffer system, providing the necessary support and stability during operation. Typically, you'll find this buffer tube in builds chambered for .308 Win, making it a solid choice for those looking to create a robust and reliable firearm.
Heckler & Koch AR-15/HK416 Carbine Buffer Tube ranked #33 of the 48 buffer tubes builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #52 of the 63 buffer tubes builders have added.
It was out of stock everywhere we track for all of August 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $31.99 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every buffer tube by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Guide →Check it against the live catalog:
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