Home Tech Technical information CMI Thunderpig P1 Hammers vs a NW Comp Hammer

CMI Thunderpig P1 Hammers vs a NW Comp Hammer

Here is a comparison video showing a CMI P1 Thunderpig hammer and a NW Comp hammer.

NW comp internals set.
NW comp internals set.

The NW internals are cross compatible between the NW Comp, NW Mean Green, Blue Royal, Red Baron and probably some other NW pumps I’m forgetting. The internals on the NW Spitfire are different and the information in this video does not apply to the Spitfire.  I do now remember if these are NW Comp 2 (slide frame) or NW Comp 1 (Swing frame) internals. I do imagine that the sear between the slide and swing frames are slightly different.

Nw hammer, sku nel1338. This hammer would work on NW Comps and similar NW undercocking pumps. It will not work on the Spitfire.
Nw hammer, sku nel1338. This hammer would work on NW Comps and similar NW undercocking pumps. It will not work on the Spitfire.

In the video comparison the hammers are actually surprisingly similar. I immediately check to see if the P1 hammer would fit over the NW’s bolts anti kink adjuster middle. It did and slide on it easily without too much play.

CMI P1 Thunderpig gun hammer sku nel793.
CMI P1 Thunderpig gun hammer sku nel793.

One bad thing to consider is that the early P1 parts did not use great quality control so just because this hammer is close in spec does not mean they all will be.

Nw comp internals with CMI hammer. NW comp bolt and hammer are together.
Nw comp internals with CMI hammer. NW comp bolt and hammer are together.

Next thing to check is the sear geometry.
The sears are close to the same shape. I don’t have an Nw to test it in but I am going to guess the sear won’t be compatible without some cutting. Regardless, this combo can likely be made to work easier than many others internal hammer/sear sets.

I will eventually check CMI diablo internals for compatibility as well.

Pictured hammer is Nel793. Find it (sold) at:
http://www.baccipaintball.com/nel793.html

The NW internal set was not for sale but look at photos of a similar hammer, nel1338, at (sold long ago):
http://www.baccipaintball.com/nel1338.html

Find NW and other Nelson based paintball parts on baccipaintball at:
Find NW nelson parts at:
http://www.baccipaintball.com/parts/pump/nelson/brand/nw-nicky-wilson.html

 

And CMI nelson parts at:
http://www.baccipaintball.com/parts/pump/nelson/brand/cmi-thungerpig.html

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