The Smith & Wesson Model 637 Airweight is a compact J-frame revolver built for discreet carry and everyday readiness. Chambered for .38 Special +P, it pairs a lightweight aluminum alloy frame with a stainless steel barrel and cylinder and a factory-installed Crimson Trace Lasergrip. The 637’s fixed sights, exposed hammer and five-shot capacity make it suitable as a backup or concealed-carry option.
Key Specifications
- The caliber is .38 Special +P.
- The barrel measures 1.875 inches.
- The cylinder holds 5 rounds.
- The frame is constructed of aluminum alloy.
- The barrel and cylinder are stainless steel.
- The grips are a Crimson Trace Lasergrip.
- The action is Double / Single Action.
- The sights are integral front and fixed rear.
- The finished weight is 15.3 oz.
- The model designation is 637 Airweight.
Lightweight and straightforward, the Model 637 pairs proven J-frame ergonomics with an integrated Crimson Trace aiming system for rapid sighting in close-range situations. Its compact dimensions and modest weight make it practical for concealed carry and as a reliable backup option while retaining the durability of stainless critical components. For shooters seeking a compact, no-nonsense revolver with an integrated laser, the 637 Airweight represents a functional balance of features and carryability.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
