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sam beach WSW

Please help - locking a DMR to semi-auto

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So I have a APS Demolition rifle that i am converting to a DMR I have done all the internal upgrades and its pushing 450 FPS. But I need to figure out how to semi lock my rifle before I go to Jackal 5. because DMR rifle must not be able to use full auto. If anyone could help me with this that would be amazing.

 

Edited by Jedi_Master
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I think you're forgetting the more important factor in that it's not legal if you can do full auto and it's over 370FPS.

The simplest way is to put a physical item in the way of the fire selector, small nut and bolt to stop it turning that far around, otherwise if there is a programmable mosfet in there that would be a great way of doing it as well.

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Thank you fro the information the reason I asked  was so I could start using this rifle again cause I have not used it since my upgrades

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Some sites won't accept just a physical block on the selector switch, as full auto can still be triggered (as a fault).

if it's an AR platform then you can modify the selector bar on the exterior of the gearbox .

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File down a tiny (1mm by 1mm) square on the selector plate AND jb weld/screw a bolt in the receiver.

 

Luke (Negative Airsoft) has a couple of videos on locking guns to semi, check his work on Youtube

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Just trim a bit off the selector plate. No ugly irreversible external modifications, gun won't go into full auto, no problem.

 

A better solution is a programmable FCU, especially because there will be times you want to be able to go into full-auto (e.g. to resolve a semi-auto lockup, which is even more common in guns with strong springs, like DMRs). If you don't already have at least a MOSFET, which you absolutely must, now is a good time to fit one that can be programmed to have semi-auto only in any fire selector position.

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44 minutes ago, PureSilver said:

Just trim a bit off the selector plate. No ugly irreversible external modifications, gun won't go into full auto, no problem.

 

A better solution is a programmable FCU, especially because there will be times you want to be able to go into full-auto (e.g. to resolve a semi-auto lockup, which is even more common in guns with strong springs, like DMRs). If you don't already have at least a MOSFET, which you absolutely must, now is a good time to fit one that can be programmed to have semi-auto only in any fire selector position.

An FCU isn't a mechanical lock though.

Needs to be irreversible (without taking the whole gun apart).

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2 hours ago, Skara said:

An FCU isn't a mechanical lock though.

Needs to be irreversible (without taking the whole gun apart).

 

1 hour ago, E21A said:

Modifying the selector plate is the only “proper” way 

My point exactly, legally it's the only way, & yeah unlikely to be found out BUT if you were it's potentially serious, especially in the land of the sweaty sock 

(Sorry Rog 😜)

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3 hours ago, Skara said:

An FCU isn't a mechanical lock though.

 

That's true, and I shouldn't be giving legally sketchy advice.

 

What do you suggest for @sam beach WSW's need to be able to clear jams by reverting to full auto, or cycle completion without the ability to select full-auto? Maybe a German-market FCU with cycle completion but without full-auto, like this Gate?

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