I'm gonna expand on this cuz I've been padding my post count all night LOL
In a genuine M14 , "some" operators were supplied with the kits to make their rifle select fire. Though all real M14 are select fire capable, most were not issued with the parts.
So it starts at the trigger group with real m14 rifles having a winged disconnect. Most commercial M14 rifles have a disconnect that is NOT winged.
The switch assembly on a real m14, fits thru a flange on the receiver. Any receiver with this flange is a prohib. The switch has a tab , that when engaged, makes contact with that winged disconnect and prevents rear hammer hook lock up... Thus firing full auto.
Any modification you make MUST not include a winged sear and functioning switch tab.... That would be a serious mistake.
The connector rod attaches to the switch, has a tab about 1/2 way along the receiver that fits the corresponding oprod take down notch on a real m14. We mill off the tab, we don't make a slot.... This is bad as receivers with that slot are generally prohib.
One more selector assembly detail on the receiver is the forward engagement slot for the connector rod. It is located just above connector (spring guide) pin. On some of the new shorties, this slot is there, and a bonus for those wanting to use a dummy connector. On most chinese rifles, that slot is not there.
Long and short, making a dummy kit from the real parts can be challenging, best bet is to get a hawks kit
