>>64412522
>Sooooo, from a purely theoretical perspective, what's preventing this bolt hold-open device from just mysteriously "breaking" (typical Turkish quality), or just spontaneously falling out of the gun?
Basically, the full force of the law.
If a lever release firearm were to have the lever release mechanism removed, it would no longer be classed as a Cat A/B and would fall under the semi auto category of C. To modify a firearm to be a different category is an offence punishable by extremely hefty fines, instant loss of license, prohibited person status applied and possibly jail time.
Anybody can modify a firearm to be a semi automatic if they’re determined enough, drilling a gas port on a bolt action is no different to removing a lever release mechanism. To do so would be a direct breach of the firearms act, and all models on the national registry are subject to inspection at any time to ensure that each category and action type is correctly reflected.
You must obtain approval prior to making any modification to a firearm, that includes “losing” parts integral to the bolt action mechanism which is legislated by federal law. Eventually you learn that any gun can be converted to anything, with enough intent. The key word being intent.
Those with bad intent will obviously be punished so why risk it. If an inspecting officer sees a gas port and a piston with a missing lever release mechanism, you are utterly fucked in the eyes of the law. It’s as simple as that.
Lever releases don’t need to be removed, you should be happy you have them at all. It’s questions like yours that directly harm legal owners because it proves that you’ve got a desire to go outside the scope of the law.