Correct Carbine Bolt

[dfletcher]

Should an October 1943 Inland have a flat bolt or a round bolt?

[bruce381]

flat

[NRAhighpowershooter]

flat

yuppers..........

[dfletcher]

Great - thanks. I figured that was the case, the rifle has the thinnest barrel band, flip rear & push button safety. Don't know how the heck a round bolt got in there.

[Spiggy]

cheaper to make, and easy to replace when you need a part that works in both your sub-gun and standard carbines

Also, the added weight for the round bolt was to slow the rate of fire on the M2 Carbine

[coop44]

the round bolt is a "revision" part, perfectly acceptable in an "as issued" weapon. The bolt was "revised" after failures with the flat bolt. Flat bolts were actually pulled out of M1's before being issued and replaced.

[bplvr]

what is the serial # {minus the last 2 digits} I'll look it up for you.

[Trench Broom]

Did the round bolts show up during WWII, or were they a post-war improvement?

[TRICKSTER]

I think they started using the round bolts in 1944.

[dfletcher]

what is the serial # {minus the last 2 digits} I'll look it up for you.

It's 9139XX.

[bplvr]

It's 9139XX.

that Inland should have a Type 2 flat bolt with a 90% extractor cut on the reinforcing web.{Riesch ,page 32 }

[dfletcher]

that Inland should have a Type 2 flat bolt with a 90% extractor cut on the reinforcing web.{Riesch ,page 32 }

How do identify Type 2 and the 90% extractor cut?

[bplvr]

first off, I mis-typed ,it should read 90 degree.
If you are looking at the bolt from above ,you should see the flat and all the cuts on the barrel side should be 90 degres to the c/l of the bolt.If there is a "V" cut at the extreme right 6:00 position ,that is a type One bolt.