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I am machining threaded hammers for the Crosman CO2 and Pumper lines. You can choose between the factory-style hammer or the Two Stage hammer.

Select the factory style if you are using the factory trigger. Select the Two Stage style if you have upgraded to my Two Stage Trigger.

Installation is straightforward, but watch the below video for tips on how not to chew up the pin (don't use vise grips without protection, etc).

The threaded hammer will eliminate pin slop and result in a smoother action.

Hammer can include the slot for "Hidden Screw" breeches when ordering for CO2 guns or 362 Heritage Edition. If you are unsure if you need this, always select it, as it's backwards compatible and also read this.

Kit will fit 2240, 2250, 2260, 2300, 2400, 2300S, 2300T, 2300KT, 2400KT, 1377, P1377, 1322, P1322, 2289, Drifter, 362 & others.

installation video

factory slop vs threaded rigidity

factory style hammer

two stage style hammer


Threaded Hammer Kit

Read about Hidden Screws here.
Hidden Screw Pumpers are very rare, but recently include the 362 Heritage Edition.

Extra Threaded Pins
$9.99 - $19.99


David C - Virginia - June 13 2024

  • Just wanted to say, that the parts you supplied me [two stage trigger, shoe, threaded hammer, Power Pack Plus] for the Crosman 2240, were installed without difficulty, and really improved the functionality of this little gem. The 2 stage trigger was the big ticket item, and man did it deliver, can't thank you enough. By chance, do you offer any upgrade for the common hardware regarding the 2240? If you do, I'd like to get some from you. The rear screw is fine the way it is, but it could be better.

    Well, keep up the awesome work/craftsmanship! I'll ordering again soon.