I need to get a small gunsmith's hammer for pushing pins in and out, as well as those other jobs that need a small, precise whack. Any thoughts on how much it should weigh (ounces), brass and/or plastic faces, etc.?

PS, at 5'7", I certainly qualify as a "small" gunsmith!

2oz. - 4oz ball peen hammer or both.

Lyman makes a hammer like you're looking for, they call it their "little tapper".

4 oz ball pein hammer is good for most stuff.

I like brass hammers. Only you can determine what is the best weight for your purposes

I have one of these small tack hammers for use with pin punches; works perfect for my needs.

http://www.homedepot.com/p/Estwing-5-oz-Sure-Strike-Tack-Hammer-MRWT/202183886

Starretts die makers hammer is Kool.

A lens in the head. Line everything up.

Will engrave with your name. Used to anyway. I'm old.