3-Lug Adapter Tools

(4 customer reviews)


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SKU: 10103 Category:


Use this tool to install or remove an HK style 3-Lug adapter on any barrel. Each double sided tool is compatible with both 9mm (small bore) and 45ACP (large bore) type 3-Lug adapters. Tool is designed to be coupled with a 1″ wrench or used with a socket extension to install a 3-Lug adapter “blind” under a handguard or barrel shroud, where the location of the 3-Lug adapter does not allow the use of a wrench or direct driver. An example would be the installation of a 3-Lug adapter onto a pistol length barrel under a carbine or rifle length handguard. This tool is machined from steel and zinc plated for a maintenance and corrosion free life.

  • 3-Lug Adapter Tool
  • Compatible with both 9mm and 45ACP type 3-Lug patterns
  • Short uses 1″ Wrench or Socket,
  • Zinc Plated Steel

Designed and Manufactured completely in USA.

Additional information

3-Lug Tool Type

Short Type, Tall Type

4 reviews for 3-Lug Adapter Tools

  1. Brandon (verified owner)

    This company never disappoints if you need to instal 3 lug under handguard the tall is what you need works perfect HBI always comes through.

  2. Frank Boutsis (verified owner)

    Were there supposed to be a Long and a short tool with this order??….i only received the “tall” adapter

    • hbi

      Hi, we used to offer both “tall” and “short” 3lug tools; but discontinued the “short” style because the “tall” tools were far more popular. The “tall” tools were/are more popular because when used with a socket they allow 3lug adapters to be installed and removed from short barrels inside of hand guard shrouds. The “short” version did not.

  3. Rob (verified owner)

    Short uses a 1″ socket. Long, however, does not. You’re going to need a 27mm wrench to get on it since it’s .06″ larger than anything you’ll have in an imperial set. Given that tri-lug adapters are rather standardized and shorter than the long adapter, I wish it had a 3/8″ or 1/2″ box at the end so you could throw this on any ratchet/torque/breaker rather than needing yet another wrench to lock it down. Or, alternatively, at least one pair of opposite sides at 1″.

  4. Mike Hunt (verified owner)

    Just received mine today and grabbed my 1″ socket and torque wrench to properly torque 3-lug adapters on two firearms. This tool fit and worked perfectly!

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