Relatively unique elements of the Mustang bass are the string-through body design, and the 7-bolt bridge.

Mustang basses originally came with the standard "Pull-bar" on the treble side of the strings of the early Fender era, though later models may not include them, or may include the bar installed as a thumb rest on the bass side of the strings.

In 1977, the mustang Bass was offered in blond, natural, and walnut, as well as sunburst, black, and white (no longer olympic).

Available in Candy Apple Red with white stripes, Olympic White with blue stripes, and three color sunburst, their features included an alder body, C-shaped maple neck, 9.5-inch radius rosewood fingerboard with 19 medium jumbo frets, four-ply white pearloid pick-guard, two Jazz Bass control knobs (volume and tone) and string-through-body bridges with four adjustable saddles.

[3] The Fender Offset Mustang Bass PJ was released at Summer NAMM, 2016.

It was released in four finishes; 3-color sunburst, aubergine, satin surf green, and arctic white.

[6] By 2020, the Fender Player Mustang Bass PJ was being offered, with a similar configuration to the previous Offset series model.

[7] Set to release for August 2024, the Fender Player II Mustang Bass PJ is in a similar configuration to the Player PJ, but most notably features rosewood instead of pau ferro, and a reshaped neck.

It is available in aquatone blue, coral red, hialeah yellow, 3-color sunburst, and polar white.

The Squier Vintage Modified Mustang Bass was released in July 2011, offered in black, or three-tone sunburst with a maple fretboard, a black pickguard and Stratocaster style volume and tone knobs.

The pickguard is a single piece, and the bridge is a string through style, rather than the Mustang's through body design.

The Affinity Bronco basses were originally offered in black or Torino Red, both of which had white pickguards.

[11] The Bronco Bass was moved into Squier's Bullet series at some point with the most notable change being the removal of the Affinity name from the headstock.

[12] The Torino Red finish was replaced by Tahitian Coral, and Olympic White was also released.

Ultraviolet was released shortly after as an online Fender exclusive with a black pickguard and pickup cover.

[13] Guitar Center offered an exclusive California Blue finish, with a black pickguard and pickup cover.