As a person that doesn't own a gun is, is it often that you're taking the bolt carrier group out of a gun when you're not cleaning it? I would think you would just leave it in the gun and take it out when you're cleaning it.
this post was submitted on 22 Oct 2025
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Pretty common to have a standard AR-15 BCG and also carry a separate "Conversion" bolt that allows you to shoot 22lr rounds out of a 556/223 caliber rifle.
Oh I was thinking it was a .22 LR conversion not .223. That makes way more sense
Often you have multiple bolt carrier groups (BCGs) some perform different functions.
For example, the lower BCG you see in the attached image is specifically designed to accept a completely different calibre bullet.