It is unwise to show up at a carbine course or competition without the means to repair your carbine. If your carbine goes down, it means wasted time and money (entry fees, ammo expenses, travel expenses, etc.). That is why KE Arms created the Trooper Repair Kit. This kit contains replacements for the most commonly broken AR-15 parts.
– Young Manufacturing Phosphate Bolt with gas rings, extractor, and ejector
– Firing Pin and Retainer Pin
– Cam Pin
– Hammer, Spring and Pin
– Trigger, Spring and Pin
– Disconnector and Spring
– Safety Selector, Spring, and Detent
I have personally seen almost every part represented in this kit break in the context of training. Even if you aren’t headed to a carbine course and you don’t compete, having spare parts for your carbine is never a bad idea. Check out the KE Arms Trooper Kit.