Good find! They indeed call that the piston and that count makes it 13. By definition that's what it is - the part that is actuated by gas pressure - so it makes sense. By definition an operating rod on autoloading rifles like the Garand is what we may call the charging handle. But on an AK the operating rod and bolt carrier are the same part, just like the hammer and sear. I am fairly certain they call a tappet on other guns the operating rod - like on the SKS or G36. Going from memory here so I can't be certain.
I am only concerned they will pull a stunt like they did with the FAL charging handle and "suddenly" decide the bolt carrier extension is actually an Operating Rod and therefore a new part. Again, that will take little effort to build and I would not be too worried about it either way! I suppose if they REALLY wanted to get pissy about it, they could identify the striker (#22) as another part! LOL
Based on that pic, and the already-published ATF doc, 13 is indeed the number of parts. Good for us. Easy to modify if necessary! :D
Here's a question - if I were to make a thicker bolt carrier extension, would that cause any change to the action? Would it possibly reduce the recoil since the extra mass would absorb some of the recoil energy? Thinking totally in terms of performance now... would be similar to reducing the size of the gas port. Could be a way to make the system more tunable... ?
Once you add in the missing PG, you will be at 14.
Originally Posted by hcpookie
Comparing our normal AK count to above breakdown
(1) Receiver = #1
(2) Barrel = #2
(3) Trunnion = N/A
(4) Muzzle attachments N/A ?
(5) Bolt = #16
(6) Bolt carrier = #15
(7) Gas piston = #8
(8) Trigger = #31
(9) Hammer = #33
(10) Disconnecter = #37
(11) Buttstock = #47
(12) Pistol grip = not shown
(13) Forearm handguards = #49
(14) Magazine body = #53
(15) Follower = #55
(16) Floorplate = #58
I currently have FCG=3, PG=1, total =4
I will be changing out the forearm as soon as Scott's are finished, probably the stock as well. There's 2 more. Using the AGP mag adds 3 more. At that point I will have a total of 9. More than enough, even if they do decide to change the count.
When I add the MD, it will be US made also, so it will cancel itself out.
I didn't get a chance to investigate as to the whys and wherefores yet. But I did start to read some info on one of the forums about how the 3 gun match shooters were adding a 4th gas port to the barrel.
Originally Posted by hcpookie
Maybe they are shooting very low power shells?
No. The 4th port (or enlarging the original 3) is for those who shorten their barrels to minimum legal (or NFA) length.
Originally Posted by 7.62x39
It provides more OOOMPH to the weapon operation at the expense of the projectile.
That makes sense. Thanks for clearing that up.
That's good news.
Originally Posted by DPH arms
We all like to help support those, who help support us. :rockin:
Hey I was browsing the Saiga-12 forums and saw an old post where Tromix said they didn't have an official letter from the ATF saying that was in fact the gas piston, but that they were proceeding on the premise that it is, given the fact that that is what the factory documentation calls it (DUH!!!).
So to answer my original question, no they don't have an "ATF letter of blessing", but that *IS* the piston as we've already established, so I can't see a problem by using one of them. Just like we don't need an ATF letter saying that Scott's new tri-rail handguard is actually a handguard! ;)
I'm not so sure the piston is as cut and dried as the handguard.
A handguard is a handguard, (with the exception of the AMD-63 and 65, and how many threads have we seen pop up on that subject).
In this instance we have to totally separate parts which could be considered the piston. While I totally agree that the puck is, and should be referred to as the piston. I still can't believe that the ATF is not counting the traditional looking piston as a 922r part. In theory it should be counted as a op rod, but isn't.
I'd really like to see it clarified by the ATF, just to be positive.
Chaos makes one also. I wonder if they ever got it verified?
The aftermarket "piston" that Tromix and others are selling serves what function?........
If you dont call that the piston, what would you call it? ..........
I dont think you've got any grey area legally.
Now if you want to argue that BATF doesnt always use their "grey matter", then thats a whole nother debate :lol: