Blackvegetable » 01 Jul 2022, 11:56 am » wrote: ↑
Huey » 01 Jul 2022, 11:54 am » wrote: ↑
In order to prevent a civilian semi-automatic AR-15 from being readily converted for use with the select fire components, Colt changed a number of features. Parts changed include the lower receiver, bolt carrier, hammer, trigger, disconnector, and safety/mode selector. The semi-automatic bolt carrier has a longer lightening slot to prevent the bolt's engagement with an automatic sear. Due to a decrease in mass the buffer spring is heavier. On the select fire version, the hammer has an extra spur which interacts with the additional auto-sear that holds it back until the bolt carrier group is fully in battery, when automatic fire is selected.
[21] Using a portion of the select fire parts in a semi-automatic rifle will not enable a select fire option.
[22] As designed by Colt the pins supporting the semi-auto trigger and hammer in the lower receiver are larger than those used in the military rifle to prevent interchangeability between semi-automatic and select fire components.
[23]
https://en.wikipedia.org/wiki/Colt_AR-15
Remember the definition of variant.
Which one?
The term of art relevant to the context, or any one of my choosing?
The one relative to common usage. Also, you can use the art o ne because that also specifies a difference. That post is why you are afraid to talk about the lowers.
Now, about the first 45. You will have to fill me in on that one. I am assuming you have mixed up the model names again.