The Q LLC Lefty (brand part no. SIL-TL-QUICKIE-556) is a 5.56 NATO/.223 Remington suppressor built by Q LLC with a quick-detach mount, letting shooters pull the can on and off a host rifle quickly without re-zeroing a direct-thread connection every time.

Key Specifications

• Rated for .223 Rem/5.56 NATO cartridges.
• Uses a quick-detach (QD) mount for fast attachment and removal from a host rifle.
• Rated for both .223 Remington and 5.56 NATO ammunition.
• Compatible with AR-15 pattern rifle hosts chambered in 5.56/.223.
• The quick-detach design allows the suppressor to move between multiple host rifles without a dedicated mount for each.
• Uses a fixed muzzle-device interface that the suppressor locks onto rather than threading directly onto the barrel.
• Manufactured by Q LLC, built around their quick-attach mounting system.
• Model name The Lefty distinguishes it within Q LLC’s suppressor lineup.
• Suited to AR-15 shooters who move a single suppressor across more than one host rifle.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

How does this suppressor attach to a rifle? It uses a quick-detach mount rather than a direct-thread connection, for fast on/off swaps.

Buy the Q LLC The Lefty 5.56mm Suppressor, Quick-Detach

A quick-detach mount makes the Lefty easy to move between multiple 5.56 hosts without losing zero. This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Q LLC‘s suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.