The Sig Sauer P938 Rainbow is a micro-compact 9mm pistol with a 3-inch barrel and a rainbow PVD finish on the slide. It has night sights, G10 grip panels, ambidextrous controls, and feeds from a 7-round magazine. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P938 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 7+1 
• Barrel Length: 3 in 
• Color/Finish: Rainbow PVD slide 
   

Detailed Features 

• Rainbow PVD finish on slide 
• Night sights included 
• G10 grip panels 
• Ambidextrous controls 
• Micro-compact frame

The P938 Rainbow attracts buyers as much for its appearance as for its platform. The rainbow PVD slide draws polarized opinions; owners either value the distinctive look or find it impractical for serious carry use. The underlying P938 platform, separate from the finish, earns consistent marks for build quality and reliable function with standard pressure 9mm.

As a micro-compact carry pistol, the P938 is frequently cited for its small footprint. The trigger draws divided opinions; some owners find the break natural while others find the pull requires more deliberate technique than they expected coming from other carry pistols. The night sights are considered a genuine value addition at the price point.

Magazine capacity is a practical limitation most owners acknowledge going in. The common first purchase after the pistol is an extended magazine. The G10 grip holds up well in wet conditions, and long-term owners rarely report grip wear as a concern.