PLUMBER 6 Posted September 15, 2012 Report Share Posted September 15, 2012 Ok I did a dumb thing while trying to tweek on my promag 20rd drum I popped the spring out is it possible to put it back in or is it trash? Quote Link to post Share on other sites
evlblkwpnz 3,418 Posted September 15, 2012 Report Share Posted September 15, 2012 I don't have any direct experience with the ProMag drums, but I am very interested in what needs to be done. It went in there once before. I would assume that if the spring is not damaged and none of the parts that retain it are damaged that it would go back in and you could use it like nothing ever happened. Maybe ProMag will chime in. Might not be a bad idea to contact them. Quote Link to post Share on other sites
PLUMBER 6 Posted September 15, 2012 Author Report Share Posted September 15, 2012 Ok after studing the situation i realized the plastic pice on top of the drum slides out alowing the drum to be turned to get the spring pressure guess i had a dumbass attack its now back together and works about the same still getting some FTE. Quote Link to post Share on other sites
vulcan16 971 Posted September 15, 2012 Report Share Posted September 15, 2012 Ok after studing the situation i realized the plastic pice on top of the drum slides out alowing the drum to be turned to get the spring pressure guess i had a dumbass attack its now back together and works about the same still getting some FTE. Stock or modified gun? Does it work well with other mags? Quote Link to post Share on other sites
evlblkwpnz 3,418 Posted September 15, 2012 Report Share Posted September 15, 2012 Ok after studing the situation i realized the plastic pice on top of the drum slides out alowing the drum to be turned to get the spring pressure guess i had a dumbass attack its now back together and works about the same still getting some FTE. If it is feeding fine then it probably doesn't have anything to do with the FTE other than the fact that the tension of a drum introduces more resistance to the action. However, if you put too many turns of tension on the spring then it could have some negative effect on ejection due to the same introduction of resistance, but it will be magnified. MD drums get 3 turns of tension. I am not sure what the ProMags come with. Quote Link to post Share on other sites
PLUMBER 6 Posted September 17, 2012 Author Report Share Posted September 17, 2012 I put 3 winds on the mag seems to be ok but i get some FTE alsoFTF with the drum, with stock 5 rd mags i get a FTE on the last rd.Getting close to 500 rd total thru the s12 been woundering if more breakin time is needed Quote Link to post Share on other sites
gunfun 3,931 Posted September 17, 2012 Report Share Posted September 17, 2012 If you don't plan to use the drum with heavy loads, some people back them off to 2.5 or 23 winds. It puts less friction on the bolt, but may make the drum too sluggish to keep up with the faster cycling high brass. Quote Link to post Share on other sites
Fallschirmjager667 729 Posted September 18, 2012 Report Share Posted September 18, 2012 If you don't plan to use the drum with heavy loads, some people back them off to 2.5 or 23 winds. It puts less friction on the bolt, but may make the drum too sluggish to keep up with the faster cycling high brass. that's what happened with mine, occasionally i would get a ftf on the first round so i let off some tension and even with low brass the last few rounds the bolt wouldn't pick them up unless i really limp wristed it from the hip, so i wouldn't suggest backing it off, not sure how an md drum would work with this though Quote Link to post Share on other sites
PLUMBER 6 Posted September 18, 2012 Author Report Share Posted September 18, 2012 Thanks for the info i think ill back off on the spring pressure and see how that does,I really haven't done much to it, changed the stock and put on a tri rail on it . I'll update how its doing after i try it to see if it makes a difference thanks to all for the help. Quote Link to post Share on other sites
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