Bloke takes his Lee-Enfield No.4 apart (a rare event, since unless you've got to dry a sopping wet rifle, no good can come of it) to show how the forend is attached to the metal. It's not obvious, and it's rather clever.

Also there's a few verbal digressions railing against the common unthinking myths, and the relative positions of SMLE's, No.4's and P14's in British shooting competitions back in the .303 days.