When I was Function checking some of our clubs Carbines the small bore rimfire youth team was setting up. A young guy had a older WRA .22Lr pump that I thought was one like I have.
He let me look at it and showed me the 'Checkered Corn Cob' pump handle had had a crack repaired by his Father. The glue line was raised up but was solid. Kid said his Dad glued it with that UV glue. Seemed pretty solid but a bit messy. It was a big crack and I left wondering how the glue (Polymer I believe) deep inside would have cured, since I couldn't see how the UV light would have got to it to cure it.

FWIW