Very useful product to have around - Windham Weaponry PKMWK Most Wanted Parts Kit AR15 And M16

This kit is very helpful and useful in finishing projects for AR's or repairing damage sustained. I often damage small parts, or lose a spring or two from time to time, and this is my insurance policy. It also helps if you got a firearm kit with parts missing in the mail, so you can finish it that day and not wait another week. This is a very thoughtful kit. Also, not all AR bolts have o-rings in them, so it is a good upgrade for reliability in warm to cold climates. Be careful in extreme cold with the o-ring and heavy viscosity lubrication, however, as it can slow the firearm's cyclic rate or decrease reliability. I would recommend to a friend. You can also carry some of these parts regularly with your cleaning kit.