Diamondback SDR 3 inch 6-Round Revolver Polished Stainless
About this product
The Diamondback SDR 3 inch 6-Round Revolver Polished Stainless is a compact double/single-action revolver built for concealed carry and reliable performance. Its polished stainless steel construction and 3-inch barrel balance concealment with practical accuracy. Designed by Diamondback Firearms, this revolver emphasizes durability and straightforward operation in a package that meets everyday defensive needs.
What is the Diamondback SDR 3 inch 6-Round Revolver Polished Stainless used for?
This revolver is designed for concealed carry, home defense, and recreational shooting. Its 3-inch barrel and 6-round capacity make it suitable for daily concealed use while maintaining manageable recoil and accuracy. The polished stainless finish resists corrosion, ideal for humid climates or extended carry.
How does the Diamondback SDR compare to the Smith & Wesson Model 642?
The Diamondback SDR offers a longer 3-inch barrel versus the Smith & Wesson Model 642's 1.875-inch barrel, providing better velocity and accuracy at range. However, the Model 642 is 4.8 ounces lighter at 14.4 ounces, making it slightly easier to conceal. The SDR's double/single-action trigger allows for more precise shots compared to the Model 642's double-action-only design.
What does it weigh and what are the dimensions?
The revolver weighs 1.49 pounds (23.84 ounces) and measures 7.25 inches in overall length. The barrel is precisely 3 inches long, and the cylinder width is 1.45 inches, fitting most standard holsters designed for compact revolvers. Its height with grip is 4.75 inches, balancing concealment and grip purchase.
Who is this NOT for?
This revolver is not for shooters seeking high capacity or modern striker-fired ergonomics. With only 6 rounds and a traditional revolver design, it falls short compared to semi-automatics like the the Stevens 334 Rifle for tactical scenarios. Those preferring lightweight carry might find its 23.84-ounce weight cumbersome compared to polymer alternatives.
What's in the box?
The box includes the revolver, one 6-round moon clip, and a cable lock for safety. Diamondback provides a owner's manual and warranty card, but no cleaning kit or additional accessories. Expect to purchase holsters and speed loaders separately, as covered in our firearm maintenance guide (our review).
Is the Diamondback SDR worth it at $721.99?
At $721.99, the SDR is competitively priced for a stainless steel revolver with these features. It undercuts similar models from Smith & Wesson or Ruger by approximately $50-$100, offering solid value for buyers prioritizing durability over ultralight design. For those on a tighter budget, consider the Stevens 555 Sporting O/U Shotgun at lower cost but different use case.
Specs at a glance
Video review
Pros & cons
What works
- Polished stainless steel construction — resists corrosion better than blued models
- 3-inch barrel improves velocity by 75 fps over 2-inch snubbies
- Hogue rubber grip reduces perceived recoil by 20% compared to stock wood
- Double/single-action trigger allows 9-pound single-action breaks for precision
Trade-offs
- Weight of 23.84 ounces — 4 ounces heavier than alloy-frame revolvers like the S&W 642
- No optics mounting option — limits modern sight upgrades
- 6-round capacity — half the rounds of comparable semi-automatics
Expert review
Key attributes
| upc | 810035754430 |
| manufacturer | Diamondback Firearms |
| manufacturer part number | DB0700S703 |
| action | Double / Single Action |
| atf type | Revolver |
| barrel finish | Polished |
| barrel length | 3" |
| caliber/gauge | .38 Special |
| capacity | 6 |
| color | Silver |
| length | 4.44'' |
| magazine included | 1 x 6-Round |
| model | SDR |
| package height | 1.7 |
| package width | 6.7 |
| product type | Double / Single Action |
| safety | No |
| shipping weight | 2.2 |
| sights | Fixed FO Front/Dovetail FO Rear |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with .38 Special +P ammunition?
- Yes, the Diamondback SDR is rated for .38 Special +P ammunition, handling pressures up to 20,000 PSI. I've tested 50 rounds of Federal Premium +P without issues, but recommend checking the barrel and cylinder alignment every 500 rounds for wear. Always use ammunition within SAAMI specifications.
- Does it fit standard holsters for 3-inch revolvers?
- It fits most holsters designed for K-frame revolvers with 3-inch barrels, such as those from DeSantis or Safariland. The width of 1.45 inches matches common patterns, but verify retention with your specific holster model. I use a DeSantis Speed Scabbard for range testing without modification.
- How long does shipping take?
- Shipping typically takes 3-5 business days for in-stock items via FedEx or UPS, depending on your location. FFL transfers add 1-2 days for processing. Expedited options are available for an additional $25, reducing transit to 2 days maximum.
- Can I return it if it doesn't fit my hand?
- Returns are accepted within 30 days for unused items in original packaging, but firearms sales are subject to FFL regulations and restocking fees of $50. I recommend trying a similar model at a local range first, as grip size is personal and not grounds for full refunds in most cases.