Ithaca knicks trap - how to remove forend?

[James Miller]

All had the "push button" FE release which was not particularly reliable, and the wood could crack around them.

And the Flues models tended to break the cocking arm.

Mine has a button [maybe a Flues] and when you push on the button it does it release. Does the FE slide front?

[Stan Hoover]

Yes,

You have a Flues. Like others mentioned, try sliding a tapered object between barrel and for end while pressing the button.
For end will go straight down, no forward movement.

[Drew Hause]

Flues

[Bill Murphy]

You only have a Knick if the serial number is over 400,000.