Skennerton & Riling. WINCHESTER MODEL 12 ASSEMBLY, DISASSEMBLY MANUAL. Philadelphia, PA: Ray Riling Arms Books, 2004. 1st edition. ISBN: 0949749583. Ideal workshop reference for stripping & assembly with exploded parts drawings, specifications, accessories and historical information of service and sporting guns. Ideal for shooter and collector of Winchester pump-action shotguns. 8½ x 5½ in., 36 pages, with over 30 illustrations in photos & line drawings. Softcover. NEW.