Detail 01
Number 3 rim diameter
Mid-size in Schilke's scale. Larger rims favor sound and low range; smaller ones favor endurance and the upper register.

Independent shopping perspective
Silver-plated trumpet mouthpiece with Schilke's number 3 rim, a 24 throat and an open Schmidt backbore. For players who want less resistance than the C models.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Mid-size in Schilke's scale. Larger rims favor sound and low range; smaller ones favor endurance and the upper register.
Detail 02
Wider than the 27 throat used on the C models, so more air moves per note and the horn feels freer.
Detail 03
Opens the blow further. Less back-pressure, but you supply the air to keep notes centered.
Detail 04
Same number 3 family, but the C runs a 27 throat and Schilke C backbore — tighter, more compact, more resistance.
Detail 05
The D keeps the 24 throat but uses a standard bowl C cup and a tighter Schmidt backbore for a firmer feel.
Detail 06
Standard plating on brass. Cleans easily and wears slowly, though the rim will show wear over years of playing.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Both sit in the number 3 rim family. The M3 has a 24 throat and larger Schmidt backbore for an open feel; the M3C uses a 27 throat and Schilke C backbore for more resistance.
It is an open-blowing piece. A 24 throat with a large Schmidt backbore asks for steady air support, which usually suits a player past the early stages.
It reduces resistance behind the throat. The horn feels freer to blow through, so you control the center with air rather than leaning on back-pressure.
It uses a standard trumpet shank, so it seats in a normal trumpet receiver. It is not a cornet or flugelhorn mouthpiece.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.