Yep, I see that BAR - BUT why then is the cocking handle beating against the front radial face of the cocking handle slot AND the BB isn't fully forwards AND the BB isn't locked by the lock block which MUST be raised up by the locking cam (in the body) to lock the bolt solidly into the barrel extension. There's something not right about this gun. Whatever it is, the cocking handle should be in the rear hole. That's just me going from memory. If that BB went forwards under the load of that driving spring and hit the front of the cocking handle slot, it'd knock seven bells out of it in very short order.
And here's another.......... The longest name of any part on any gun we were taught. .30 M1919 top cover.....BUSHING, belt feed lever axis pivot pin
I suspect the barrel is screwed too tight into the barrel extension and not allowing the breech lock to ride fully up the ramp to lock into position. Two clicks of the locking spring to start and then headspace for correct. For this gun, four clicks would likely do. I also found these demo guns' springs were less than stellar. Yes, perhaps it needs a session on the bench. But at any rate, I don't think it's really an issue, the bolt stud/cocking handle IS very close to the front.
No, no...the extractor is 3" long(or so), remember? It goes into the hole further back so it comes to the bolt face. The hole for the bolt stud is up front, therefore the handle cocking assist goes there. That handle would be the assist for the .50. The regular one for the .30 should be shorter.[/QUOTE]
Peter is probably thinking of the M37 Tank gun. It being dual feed, the charging stud used the same hole in the bolt as the extractor assembly. After the fourth try the US Army finally got a .30cal Browning that did not issues. The M73 and M219 replaced the M37 and they were total failures as tank MGs. The US Marines initially went to tank version of the M60 and then the M240 as a tank gun. Eventually the US Army went to the M240 as a coaxial tank gun.
I saw one of those 'Cut Away' Instructional guns. Also in Seattle when I was there approx. 15 years ago, In a Surplus shop, they also had an M1 carbine in similar mode. They were BOTH huge!
Sadly not for sale, just there as interesting display items! Anyway, how the heck was I going to get one back as Hand Luggage on the Plane?.........LOL
I didn't need to Peter, it's a standard x2 sized trainer, there were hundreds of them made to exactly the same pattern with the same display stand. I've had my eye on one for a while but the cost is silly.
Thanks for that BP but I have not seen a 2x scale version. All our training guns and cut-aways were standard service guns. We just learnmed the action by writing it down and exams every week! Your slo-mo doesn't illustrate the mech safety or the point in question BP
I can see where everyones coming from but (thread 1 gun) if that BB is fully forwards - as it now seems, then the gun is NOT locked with the lock block securing the BB to the barrel extension. (it does this by locking the BB to the barrel extension which is screwed to the barrel. This is mechanical safety). AND IT MUST BE LOCKED. So even with barrel screwed in tight it wouldn't fire because the firing cams of the trigger couldn't release the sear (that's the gun timing and another mech safety feature) BUT it would still be locked on the lock block. which it isn't in the picture
There is approx 1/2" or so of rearward recoil of the barrel while it is still locked to the B-extension BEFORE the lock block strikes the cam/unlocking horns of the lock frame and allows rearwards travel of the BB. This is rearwards mech safety.
I could be wrong in my hands-on dealing with zillions of Brownings OR the gun shown in thread 1 could be/is faulty. Whatever which way it is, when the BB is fully forwards, ready to fire, regardless of the barrel clicks, closed or open, THE BB MUST BE LOCKED TO THE BARREL. If it ain't, like the gun shown, then what follows is a breech explosion and the top cover will go flying skywards and the working parts go flying rearwards and the side plates go flying outwards
Thinking about it....., 5 mts later....... If the barrel is screwed right into the extension as mentioned by BAR, it might not lock fully. BUT the BB would still have to travel another 1/2" forwards to lock. And in this gun, there ain't another 1/2" left to move forwards! Something is wrong. Has he got the lock block back to front I ask? On both the 1919 and the L3's the gun must lock to fire. I have seen guns that have exploded in the tank turrets (sheared lock block pin)
As an afterthought, we had a fully sketonised M1919 on a horizontal board, so skeletionised that you couldn't put another viewing hole in it if you wanted to! Even the mount board was cut-away underneath so that you could look up into the action. There was a handwheel and rod linkage to an extended cocking handle that one of the class would operate very slowly while the class followed the action. The driving spring was weakened. But every so often, Harry Weekes, the bullying ogre would get one of the class out to explain a phase of the action.
The action of the belt feed lever and top cover feed mech was my nadir because it was all interlinked with other happenings and goings-on. When it wasn't right............. you started again!
Last edited by Peter Laidler; 08-29-2016 at 06:40 AM.
Reason: to add a bit.....
These enlarged training aids appeared after WWII into the 1950's and early 1960's. The M1919A6 versions are rarely found complete in the carrying case. All the one I have seen are missing the enlarged plastic rounds (looks like a .50 cal cartridge) and belts. Most are always missing parts or have broken parts. Parts being made of cast aluminum they tend to break easily. Most M1919A6 training aids with belts use replacement plastic cartridges and M2 .50 cloth belts as a substitute. I have seen these enlarged training aids in M1918A2 BAR, M1 Garand Rifle, M2 Carbine, and early M16A1 rifle. I understand these were also built in M1911A1 .45 ACP and M3A1 Grease Gun which I have not seen. Of all of the M1919A6 versions I have seen these training aids appear to be under contract from the US Army National Guard and US Navy Contracts. These type training aids appear to fall out of favor in the mid 1960's probably due to the cost to the US Government.
Exactly as mentioned likely. These replicas aren't exactly durable and were used lots so it probably got beat up to death. One watches the demo and can see the drive spring doesn't exactly drive. It took hand movement to push the bolt home.
PM
Originally Posted by fjruple
