AEA HP Max and big-bore Challenger adapter, M18x1 to 1/2-20 UNF

AEA HP Max & Big Bore Challenger Adapter (Converts to M18x1)

$34.00

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Thread converter for the AEA HP Max and AEA big-bore Challenger airguns. Converts the factory muzzle thread to M18 x 1. 

Compatible Airguns

  • AEA HP Max
  • AEA big-bore Challenger (M18x1 thread)
  • AEA HP SS Max (.357)

Not for the AEA Challenger Pro or standard-caliber Challenger — those use M14x1, not M18x1. See the M14x1 adapter here. Confirm your muzzle thread before ordering.

Specs

  • Input: AEA HP Max / big-bore factory thread
  • Output: M18 x 1
  • Material: 6061-T6 aluminum, black hardcoat anodized

Pair with an M18 x 1 Eagle Suppressor.

Not sure if your specific model fits? Email us with the make, model, and a photo of your muzzle- we'll confirm fitment before you order.

 

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Not sure if it fits? Ask us

Frequently Asked Questions

Match two things: the thread or barrel diameter on your gun, and the thread on your suppressor. Most of our adapters convert to 1/2-20 UNF, the common US airgun suppressor thread, and the product title tells you the input and output. If you don't know your muzzle thread, the airgun thread size guide shows how to check it. You can also email support@airguncapital.com with your make and model and we'll confirm fit before you order.

A straight, fully seated adapter never touches the pellet. Trouble comes from an adapter that's loose against the muzzle shoulder or a suppressor bore that sits off axis. Snug it down and re-zero after you install it, because any muzzle device can move point of impact a little the first time.

Threaded adapters screw onto the factory muzzle thread. Start them by hand so they don't cross-thread, then snug about a quarter turn. Slip-on and clamp-style adapters slide over the barrel or shroud and lock with set screws, so tighten those evenly. Then thread your suppressor onto the adapter and re-zero.

No tax stamp or Form 4 is needed to buy an airgun thread adapter from us, and it ships to your door. State and local rules on airgun suppressors and accessories vary, so check that it's legal where you live before you order.

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