Need Help to ID these Gun Parts.

[OldYooper]

Pictures 1 & 2 are marked with BOSS on the sight. I read somewhere Marble Arms made these, can't find the source.
Can you Help.
Picture 3 is a rear sight ramp with a #2 on stamp on it.
Picture 4 is a 8" stock bolt. Need help with what brand of
rifle or shoot gun it is used on. As aways thank you for Looking.
If interested in any of these PM me--Oldyooper

 

[Muley Gil]

Looks to me that the sight is marked E Goss.

Goss and Marble-Goss Sights Differences | Rimfire Central Firearm Forum

 

[2152hq]

That's the logo for 'F. Goss' (Sight Company
That was the name of the company before Marbles Co bought them out sometime in the mid (?) 1930's. The company then changed to Marble-Goss.

So you have an early one there..

 

[Ivan the Butcher]

Stock bolts are by the "Gazillion" without a note saying what it came from, the manufacturer wouldn't recognize it!!

However, it bears no resemblance to a No 4 or No 5 Enfield.

Ivan

 

[2152hq]

The 'bolt' may also be a SxS Shotgun Forend bolt.
Some models have such a bolt that comes in from the tip of the forend wood straight back and threads into the forward end of the Forend Iron.
That's to pull the F/E Iron tightly into the wood along with the normal verticle screws that secure the Iron to the wood.

The very small Head on the bolt made me think of that,,but it's still a WAG as to which gun it could fit.
Then again,,it may just be,,,,a bolt.