bolts interchangeable?

[MIL rifle1]

Are 1903 and 1903a3 bolts interchangeable?Also what other parts are interchangeable, if any? Thanks.

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[Emri]

Just about everything but the rear sights and handguards are interchangeable but minor to major fitting may or may not be required.

HTH,

Emri

[John Beard]

The barrels, upper bands, and front sights are also not interchangeable, but can be made to fit.

J.B.

[Emri]

John,

I knew there was something I would leave out! But I have seen too many rifles with the front sight and bands made to fit. On the barrels, I didn't explain in detail, I assumed MIL rifle1 was interested in replacing "small parts" and not building a rifle from a box of parts as Vi Shooter did.

Emri