That's the best picture I can find right now that explains it. Remember that the HKs have no gas system, the force of the bolt getting pushed back pushes the rollers into the bolt head, where they have to push the carrier back to go into the bolt head enough to unlock.
Kinda hard to comprehend that it's not locked like other designs. What helps me imagine this is that if you put a cleaning rod down the barrel and pushed on the bolt face hard enough you would unlock the bolt, whereas with most designs as hard as you pushed you wouldn't do anything. The forces are too great to unlock something like a g3 with a cleaning rod, but you might be able to do it with one of the pistol caliber ones...
I keep trying to convinve myself I don't need one........but its not working :dunno:
not to bring up a dead thread, but 1biggun, can you still make x25 barrels to fit into an ak74 trunnion? I new and didn't have enough posts to PM you.
is this thread dead?
SARCO advertises 30 cal blanks cheap, 2 and 4 grove about $15 each. I think they are springfield barrels with the chamber cut off. centerfiresystems has yugo ak barrels from the crate for about the same, no pick. I think that means rough shape.
The SARCO .30 cal dewat barrels (Springfield mfg) I gather are from 1903-A3 rifles ??? They could also be used for 7.62x25mm Tokarev ie in PPS-43 builds etc.