Regular price Sale price $119.00
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Where to buy in store: Stockists


It's a revolution in how you think about attaching your suppressor.

Muzzle thread adaptor system for A-TEC A-Lock compatible suppressors.

This product page is for the A-LOCK muzzle adaptor only.

  • Threads 15x1 or smaller use the short A-Lock.
  • Threads 16x1 and larger use the long A-Lock.

This unit can be used in two ways:

  • Adaptor locked on to the muzzle thread
    • This allows our suppressors to be quick attached and detached in a second with a forceful 1/4 turn.
    • This allows a single suppressor to be shared amongst multiple rifles all with different threads. In this case the calibre of the suppressor must be equal or greater than the largest calibre rifle.

  • Adaptor locked inside the suppressor
    • This allows the suppressor to be attached using muzzle threads like any conventional suppressor.
    • When the suppressor is removed, nothing is left on the barrel thereby leaving its aesthetic unchanged.

Thread systems available in variant selector

  • All usual imperial threads.
  • All usual metric threads.
  • Custom Thread (stainless steel adapter -not blued) -let us know the desired thread pitch in the notes on checkout.


We recommend using a gunsmith to check your muzzle thread concentricity, dimensions and alignment before fitting. We also recommend having as large a thread diameter as possible on your barrel, i.e. don't just get a 1/2"x20 thread, it's unsuitable for most calibres other than 22LR.

  • Check that the rifle is unloaded and remove the bolt from the action.
  • Do not do a test run of attaching the adaptor and suppressor as the A-Lock will get stuck inside the suppressor.
  • Degrease(brake clean) the threads on the A-LOCK Mini Adapter and on the barrel.
  • Do a dry run of the adaptor onto the threads:
    • Maximum length of the thread from muzzle to shoulder should be 15mm. 
    • Do not tighten at all, it could get stuck.
    • Check there is ZERO protrusion of the muzzle crown or threads past the end of the adaptor. Protrusion will prevent the adaptor locking into the suppressor.
    • Remove.
  • Apply strong and heat resistant thread lock such as Loctite 638 to the muzzle threads on your barrel. 
  • Attach and tighten the A-LOCK Mini Adapter to the barrel by hand. Use a rag to get more purchase on the adaptor.
  • Wipe off any excess Loctite adhesive, especially on the A-Lock outer surface and threads. Apply grease on the A-LOCK Mini Adapter.
  • Attach the suppressor, turning it only in the locking direction so that it does not loosen the adaptor.
  • Grasp the suppressor and tighten with moderate torque (6-8 Nm). Do not use extreme force, or the A-LOCK Mini threads may be damaged.
  • Let the adhesive cure for 12-24hrs.
  • After curing, detach and attach the silencer a few times to check the fitting and alignment.

    Why choose Stäger?


    The highest standard of quality is our norm. Our designs, technologies, materials and workmanship are second to none.


    We will do our best to get you into the right product for your purpose. We make the process clear and easy.

    Stäger Sport

    The source of high quality sporting and professional goods