Slingwell markings:
RMC, F, T, and Bomb
Don't recall what the F and T stood for, maybe shift and line location?
RMC= Rock-Ola made for Underwood....... Thus the nice wood!
You know some early UEF stocks are found without the CC next to the Boxed letters.
Is the Rivet completely missing?
Handguard Liner Rivet Gun Parts | 983280 | Numrich Gun Parts
Later,
Charlie-Painter777