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Tom West's Custom PC77 PumpMaster Classic Short Rifle

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I think it helps

June 14 2011 at 2:23 PM
jim  (Login jz2)
Crosman Forum Member
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Response to 1377 steel breech questions

the stock rear site doesn't fit the steel breech. but there are numerous peep, notch, red dot and scope options given that the breech is grooved. I think the breech makes the gun more accurate, because the barrel is more rigidly attached. I don't think it improves fps. I did flat top piston and valve mod and did get a significant fps per pump increase. I added a longer barrel with the steel breech. probably would not have attempted that with the plastic breech.

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