Glock speak?

The Trigger Spring - the standard Glock trigger spring is a coil-type unit that, when paired with the standard connector (see below), yields a nominal trigger pull of 5.5 lbs. This spring may be replaced with either the NY1 or the NY2 spring to create a heavier, more consistent (ie revolver-like) trigger pull of 8 or 12 lbs., respectively.

Read more at this link if you're interested: http://mywebpages.comcast.net/shooter2_indy/glockgear.html
 
Find them at glockparts.com.... $3 for the part and $3 for shipping, and you can add a few things to your order without increasing the shipping cost as long as they're not too big. Pretty hard to beat.
 
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