824TSV, the 46 slide and bbl can switch to the 41 frame AND Vise Versa. The 46 bbl will not fit on the 41 frame with the 41 slide due to a lack of slide rail cut in the 46 bbl. The 41 bbl on the 46 frame with the 46 slide is ugly (due to the gap) but functional.

Other differences - the 46 can use the 3 piece underbarrel weight but the 41 is not set up to accept the 46 1 pc underbbl weight. The 46 does not have the fingergroove that the 41 (after about 11000) has. The signifigant difference between the two is the weakness of the 46 slide rail connection to the slide body on the 46, especially the earlier (under 25000 generally) slides with a 90% cut vs the later radiused cut - absolutely std velocity ammo ONLY.

Many parts are interchangable. Some later 46s were shipped with wood grips identical to the 41s. An interesting note is that the 46 5.5" bull bbl is very similar to the 441 bbl except for the rail cut and finish.

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TOMBECK