The B15 presents no great mechanical surprises but incorporates some interesting features. The 3in-chambered barrels are back-bored (18.7mm) and proofed for steel shot. The action is B25-inspired but lower in overall height although retaining a similar locking system and a full width hinge pin. The gun benefits from the new DS (Double Seal) multichokes that incorporate a clever sealing system to prevent gas leakage. The single-trigger mechanism is mechanical rather than inertia operated, which is a bonus in a game gun. Browning/mirokutype hammer ejectors are fitted in the fore-end. The sighting rib is well laid and unusual in that it is both solid and very narrow (a 6mm-4mm taper design).
The B15 demonstrates that extra finish means more than just improved cosmetics