Understanding bolt carrier groups is of essential importance when it comes to using mechanical parts properly in rifles and pistols. Finding the right bolt carrier group ensures smooth cycling and efficient operation of mechanical components in diverse types of guns. There are a few different factors that go into determining the particular bolt carrier group that a piece of equipment belongs to. The following are five of the major factors to use to determine which bolt carrier group is appropriate for your particular firearm platform:
1. The bolt design itself
The purpose of the bolt is to ensure that the round moves correctly through the chamber and then takes out the case properly afterwards. The bolt must also successfully eject the cartridge after the bolt has gone through the chamber. The bolt is made up of numerous components including the body, rings, lugs, ejector, face, and extractor. The design of each of these parts is unique to certain bolt carrier groups so that moving parts fit together properly.
2. The bolt carrier
The carrier component is responsible for sheltering the bolt. The carrier attaches itself to the setup's gas key. This component needs to be cleaned periodically to make sure that screws continue to attach it firmly. The bolt carrier will conform to the shape of the bolt.
3. The cam pin
There are numerous functions of the firing process that are carried out through the cam pin. Perhaps the most important function of the cam pin is to ensure that the bolt stays inside the bolt carrier and stays properly in line until the bolt carrier group finishes the entire forward movement and makes its way into the battery.
4. The firing pin
The firing pin is necessary within the bolt carrier group because it strikes the cartridge primer. This part of the process of firing the gun ensures that the gun detonates properly. The correct firing pin for a given bolt carrier group will depend on the type of cartridge that is used in the pistol or rifle in question.
5. The gas key
The gas key can sometimes also go by the name of "bolt carrier key". This part is responsible for channeling gas through the tube and directly into the carrier. One important maintenance task for ensuring that the gas key continues to function properly within its bolt group is having the gas key tightened and staked. This way, the screws will be forced to stay firmly in place over time.