Spare parts kit?

mzvarner

Sergeant
Full Member
Minuteman
Mar 7, 2013
510
379
Spokane, WA
So a friend damaged one of the gas rings on his BCG by not paying attention when putting things back together. Got me thinking about having an ar15/ 10 spare parts kit, especially since detents usually launch faster than the speed of light and disappear into another demention. So who makes a decent kit to cover the platform? Ideally have parts to replace upper, lower, and bcg.
 
Detents? You can’t lose those doing operator level maintenance. Gas rings? Why would you take gas rings off until they are dead and you’re replacing them?

Extractor, extractor spring, action spring, firing pin retainer, gas rings.