DM7 Ironman... Billy Wing bolt?

[PBGunny]

I recently acquired what I believe is a DM 7 Ironman from a good friend who gave it to me as a Christmas present.
I'm not really up on Dye markers aside from the fact that it has a boatload of o-rings in it.
When I took the bolt out, I noticed that the bolt wasn't marked in any way.
I would have thought that it would have a Billy Wing bolt in it, since it is Ironman marked.
I also thought all Billy Wing bolts were marked and were red.
Anyone have any knowledge on these?

[ChuckLove]

These IM guns were available for on the public and didn't come with the Billy Wing bolt. That was an "upgrade". Apparently the Billy Wing bolt is more efficient on air and better but I think performance is negligible from the factory bolt.

[PBGunny]

When did Billy Wing start making the bolts? Just curious.
I asked my friend and he said it was because they didn't start making them till later.
I'm just curious.
I think I'm going to try and find an original barrel for it cause the CP .693 just isn't going to cut it anymore.

[iticklegrandmas]

That is a DM6.