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Action Army CNC Steel Hammer for AAP-01

Action Army CNC Steel Hammer for AAP-01

£34.95
£34.95
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DETAILS

SKU: 58818667
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Action Army CNC Steel Hammer for AAP-01 — a machined steel hammer where the factory fitted a casting, and it covers the Marui EU18 as well. The part that takes the hit every single shot.

The hammer is struck, hard, on every cycle. The factory part copes with the gun as standard and starts to matter the moment the spring rates go up, because a harder recoil spring and a stiffer hammer spring both end up loading the same component.

Machining it from steel is the fix. It holds its sear engagement surfaces rather than peening them over, which is what keeps the trigger feeling the same in month six as it did in week one.

It is listed for the AAP-01 and the Marui EU18, so it spans both platforms. They carry no description for it, and Action Army publish a parts list rather than a datasheet, so the fitment and the material are what is stated and that is all we will claim.

Specifications

Specification Detail
Fitment Action Army AAP-01 and Tokyo Marui EU18
Material Steel
Construction CNC machined
Function Replacement hammer

Good to know before you buy

This is an internal part. Fitting it means stripping the lower, so give yourself bench time and somewhere to lose the small components.

It is a durability upgrade before it is a performance one. If the gun is standard and working, you are buying longevity rather than a change you will feel on the first magazine.

Worth doing at the same time as any spring change, because the lower has to come apart for both.

There is no published figure for the hammer. Action Army put out an exploded diagram of the part and nothing numeric alongside it.

Frequently asked questions

What does a steel hammer actually improve?
It keeps its shape. The sear surfaces stay crisp under repeated hard strikes instead of gradually deforming, so the trigger behaves the same over time.

Will I notice it immediately?
Probably not. It is a wear part upgrade, so the benefit shows up over months rather than in the first game.

Does it fit the Marui EU18?
Yes — both the AAP-01 and the Marui EU18 are listed.

Is it hard to fit?
It sits inside the frame, so the lower is coming apart either way. Manageable with one AAP strip-down behind you, slow the first time.

What does it weigh?
No figure exists for it publicly. Steel is heavier than the part it replaces, and that is as far as the sources go.

💡 Titan Forge Airsoft tip: Do it in the same strip-down as a spring or trigger change rather than opening the gun twice. More internals in AAP01 parts.