A-tec - A-Lock Mini Thread Adapter

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

This unit can be used in two ways:

• Adaptor locked on to the muzzle thread
• This allows the Optima and H2 suppressor 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.
• This means the adaptor is on the end of the muzzle, maybe affecting it's aesthetic if it is a thin barrel.

• 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.

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.

ATTACHMENT INSTRUCTIONS

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. 

Warning

Tighten the silencer firmly by hand onto the A-LOCK Mini Adapter prior to shooting and check regularly and between shots. This is good practice for any suppressor on threads, not just A-Lock.