Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
3/13/2010 8:51:54 PM EDT
I would like to replace my #23 mainspring with a #19.

I have the ILS housing on a springfield loaded.  Can I replace this spring, or do I need a new mainspring housing?
3/14/2010 4:38:51 AM EDT
[#1]
I believe you can use the ILS mainspring housing, but its mandatory that you have a conventional mainspring cap pin to replace the one that was used with the ILS.  The standard Springfield ILS system has a 28 lb mainspring, so if you currently have a 23 lb spring, it sounds like it's already been changed once.  If so, the spring cap pin that's currently installed is probably OK.