How Do I Set Up My Pump Mag?

[cougar20th]

Originally posted by Twinky4907
can somebody help with my problem i did all that and i dont have to pump it for some reason it still stays semi any sloutions?

i had this problem. what was strange was it was working fine then all of a sudden started going semi til i changed the bumper. i went to the local shop and got all sorts of bumpers. tryed them all. the rt(clear) bumper worked for me. slightly harder pull but nothing to complain about.

[Twinky4907]

ok so here is some possiablity's that could be wrong wave spring not centered correctly, mainspring to long. any thing else

[Strider]

Do you have the proper Power tube spacer? I can't remember what size spacer you need right now...

[Twinky4907]

yea i got the .215 power spacer in it. still dont work, not even as a semi

[Twinky4907]

yeah they are realtively new. but im sending it to bard from agd and he sadi he could fit it up and put hardline on it. so i am just goign to send it to him to fix up.

[Muzikman]

It wouldn't be the PT spacer, bolt or sear since those parts are actually working, and well, actually working too well. If the gun is going into semi, that means the bolt is traveling to far back and the sear is catching it. This is the reason too powerful of a bolt spring and/or too weak/un aligned wave spring would cause this. The smaller PT spacer is just so that then the wave spring does cause bolt stick, the gun doesn't leak down the barrel.

Before I was able to figure out why it kept going semi, I put two wave springs behind the bolt. This worked well, but took that reallt light pump stroke and make it really hard.