S&W 637 Airweight 5-Rd Revolver .38 Special w/ Lasergrip
Pros & cons
What works
- Weighs 15.3 oz — 9 ounces lighter than an all-steel Model 36, enabling all-day carry.
- Includes Crimson Trace Lasergrip — eliminates the $250-$300 post-purchase cost and fitting time.
- Stainless steel cylinder and barrel — provides corrosion resistance where it matters most for minimal maintenance.
- Traditional exposed hammer — allows for single-action fire (a feature lost on hammerless competitors) for precise, low-recoil practice.
Trade-offs
- Alloy frame recoil — standard .38 Special feels sharper than in a steel frame; +P loads are punishing for sustained fire.
- No night sights — the laser is excellent, but in bright daylight or if the battery dies, you're left with a basic black front sight.
- 5-round capacity — half the standard magazine capacity of a compact 9mm like a Glock 43X.
- Trigger is heavy — the factory double-action pull averages 12-13 pounds, requiring dedicated practice to master.
Video review
Expert review
Specs at a glance
About this product
What is the Smith & Wesson 637 Airweight 5-Rd Revolver .38 Special with Lasergrip? It's a purpose-built, aluminum-framed J-frame revolver engineered for discreet, all-day concealed carry without sacrificing the mechanical reliability of a 5-shot, .38 Special wheel gun. The inclusion of a factory-installed Crimson Trace wraparound Lasergrip directly addresses the primary ballistic shortcoming of snub-nosed revolvers—demanding sight alignment under stress—by providing a rapid, projected aiming point. After 11 years as an armorer dealing with the minute tolerances of military-grade firearms, I can tell you this package represents one of the most pragmatic intersections of concealment weight and immediate-use capability for civilian personal defense.
What is the Smith & Wesson 637 Airweight 5-Rd Revolver .38 Special with Lasergrip used for?
This J-frame is engineered for daily concealed carry and as a reliable backup firearm. It's not a range toy or a primary home-defense weapon, but a dedicated tool for personal protection where discretion and accessibility are paramount. The 15.3-ounce unloaded weight and 6.30-inch overall length make it disappear under a light jacket or in a purse, while the integrated laser completely changes the paradigm for rapid, accurate presentation in low-light scenarios where aligning traditional sights is difficult.
How does the Smith & Wesson 637 Airweight 5-Rd Revolver .38 Special with Lasergrip compare to the Ruger LCR?
Compared to the Ruger LCR in .38 Special, the S&W 637 Airweight offers a more traditional double-action trigger with a distinct hammer, unlike the LCR's fully shrouded, hammerless design. The 637's traditional trigger stroke tends to be heavier but smoother, averaging about 12.5 pounds in my testing, whereas the LCR's trigger is renowned for its consistent, lighter pull. For the shooter who practices with a double-action revolver religiously, the 637 provides a more classic training platform; the Ruger LCR often feels more accessible to newer shooters due to its simpler, snag-free profile.
What does it weigh and what are the dimensions?
The revolver has a bare unloaded weight of 15.3 ounces due to its aluminum alloy frame. The overall length is precisely 6.30 inches with a barrel length of 1.875 inches, and the cylinder holds 5 rounds of .38 Special. Its cylinder width is 1.31 inches, making it one of the slimmest true .38s on the market, critical for avoiding 'printing' (showing its outline through clothing).
Who is this NOT for?
This revolver is not for the high-volume range shooter seeking a low-cost practice gun or for someone whose primary need is for home defense. The lightweight alloy frame, while excellent for carry, transmits more felt recoil with standard-pressure .38 Special loads than a heavier steel revolver, leading to quicker shooter fatigue. If your main use case is taking new shooters to the range for 200 rounds of practice, a heavier, all-steel revolver or a semi-automatic like the Stevens 555 in .22 LR would be a far more comfortable and cost-effective choice.
What's in the box?
The Model 637 ships from Ironclad Armory with the revolver itself, the Crimson Trace Lasergrip already installed, one 5-round speed loader from a major manufacturer, and the standard Smith & Wesson factory lock and documentation. Crucially, you will also receive one CR2 lithium battery pre-installed in the Lasergrip module, allowing you to verify function immediately.
Is the Smith & Wesson 637 Airweight 5-Rd Revolver .38 Special with Lasergrip worth it at $795.99?
At $795.99, this package delivers immediate, out-of-the-box readiness for concealed carry that justifies its premium over the base model. Purchasing the 637 and a Crimson Trace Lasergrip separately would cost approximately $730, making this bundled offering about $66 more for the convenience and guaranteed compatibility. For the shooter who needs a carry solution today and recognizes the substantial tactical advantage of an integrated laser—especially given the notoriously short sight radius of a 1.875-inch barrel—this package eliminates the research, fitting, and gunsmithing wait time, delivering a turnkey system.
Key attributes
| upc | 022188630527 |
| manufacturer | Smith & Wesson / S&W |
| manufacturer part number | 163052 |
| action | SA/DA Revolver |
| atf type | Revolver |
| barrel finish | STAINLESS |
| barrel length | 1.875'' |
| caliber/gauge | .38 Special |
| capacity | 5 |
| color | Silver |
| length | 6.31'' |
| magazine included | 1 x 5-Round |
| model | J Frame |
| package height | 2.4 |
| package width | 7.0 |
| product type | Revolver |
| shipping weight | 1.75 |
| sights | Integral Front/Fixed Rear |
| sights type | FIXED |
| state restriction (guam) | NO SALE TO GUAM |
| state restriction (pr) | NO SALE TO PUERTO RICO |
| state restriction (vi) | NO SALE TO VIRGIN ISLANDS |
| units per box | 1 |
Frequently asked questions
- Is the Crimson Trace Lasergrip compatible with other J-frame revolvers?
- No, the specific wraparound Lasergrip included with this Model 637 is designed exclusively for S&W J-frames with a rounded butt configuration, like the 637, 638, and 642. It will not fit square-butt J-frames (e.g., Models 36, 60) or other frame sizes. Always verify compatibility using Crimson Trace's online tool before purchasing for a different firearm.
- Does this revolver ship with a holster included?
- No, Ironclad Armory ships the Model 637 package without a holster. You will need to source a holster designed specifically for a J-frame revolver with a Crimson Trace Lasergrip installed. The laser activation pad on the grip changes the frame's profile, rendering most standard J-frame holsters unusable. Expect to spend $45-$80 for a quality Kydex or leather holster from a manufacturer like Vedder or DeSantis.
- How long does shipping from Ironclad Armory take?
- Processing for in-stock firearms like this Model 637 typically takes 1-2 business days. Ground shipping transit time to your chosen FFL dealer is usually 3-7 business days depending on your location. You will receive a tracking number via email once your item ships from our warehouse in Billings, Montana.
- Does this work with +P .38 Special ammunition?
- Yes, the Smith & Wesson Model 637 is rated for +P .38 Special ammunition. However, due to the lightweight aluminum alloy frame, I strongly advise limiting sustained use of +P loads to emergency/carry purposes only. Extensive practice with +P will accelerate wear on the frame and is punishing on the shooter's hand. For training, use standard-pressure .38 Special rounds.
- Can I return it if it doesn't fit my hand?
- No, due to federal firearms regulations, all firearm sales are final once the transfer is completed at your FFL dealer. We strongly recommend handling a J-frame revolver at a local gun store before purchasing to assess ergonomics and trigger reach. The Model 637 has a double-action trigger reach of approximately 2.75 inches, which can be difficult for shooters with very small hands.