Russian surplus will work and older spec works

Modern stuff is lowered pressure and won't cycle reliably

roller locking uses the rollers to actually lock the bolt into place, whereas Roller delayed uses similar rollers to just delay the blowback, but doesnt itself lock the mechanism

yes i know

but

why is delayed use so much more often then locked

Toggle lock coolest mechanism
Flapper lock close second

Straight blowback gang

because other locking systems are generally good enough, and cheaper/more easy to maintain/use

120mm blowback gang

also uh, this is me being dumb but

The difference between roller lock and roller delay is not the interface of the bolt but the action of the entire barrel

things like a gau-6 dont need locking cause the barres are fixed so they can turn adn the pressure is safe by the time it does a revolution?

On a locking gun, the bolt and barrel recoil as one unit

On a delayed gun the barrel is fixed

oh so thats how they are functionally different

thank you

The bolts could actually be identical

But whether or not the barrel is fixed would matter

It also can depend on if the action at any point is entirely unable to open

Usually rearward force alone can't unlock the action on a roller lock, and the action reaching a toggle at the rear point separates it

@Yusako https://www.youtube.com/watch?v=12F_am8aumg The bolts do lock up?

o

ohh

Miniguns have bolts

it unlocks when it spins further

i see

They are slaved to a track

yeah i know

i saw

i understand

the unlocking is really simple

The action of the weapon is not in any way interfaced to the bolts as the weapon is motor driven

Therefore a dud won't stop it

Even a complete bolt or barrel failure won't stop the fun

thats why it it's a "Chaingun" not a machine gun

As long as it has power it's the most reliable gun you can get

Chain gun as a term is actually registered by Northop Grumman

well it's still a useful word, unless there is a better one to use for the definition

It generally is considered to have a single barrel however

They define it as a gun driven by external power instead of cartridges