We precisely matched each gunX’Xs screws to the correct Magna-Tip(R) bits to give you the best possible, blade-to-slot fit. Mfg: Brownells SPECS: Win. 97 – (4) bits; Marlin 336 – (6) bits; Win. 92 – (7) bits; Win. 94 Angle Eject – (5) bits; Win. 94 Top Eject – (6) bits.