Rock River Arms 4S2120 40 Smith & Wesson (40 Auto) pistol Specs and Reference Photo
June 20, 2026
Handgun Profile
The Rock River Arms 4S2120 is listed as a 40 Smith & Wesson (40 Auto) pistol and with Single Action (SA) operation with a catalog thumbnail image.
4S2120
40 Smith & Wesson (40 Auto)
pistol
Single Action (SA)
Specs
| Make | Rock River Arms |
|---|---|
| Item Number | 4S2120 |
| Category | Handguns |
| Subgroup | pistol |
| Caliber | 40 Smith & Wesson (40 Auto) |
| Action | Single Action (SA) |
| Year | 2010 |
| Made In | USA |
| Barrel Length | 16" |
| Weight | 4.9 oz. |
| Overall Length | 26.5" |
| Trigger | Single Stage |
| Frame Material | Steel |
| Frame Finish | Black |
| Slide Finish | Black |
| Grip | Hogue Rubber |
| MSRP | $ 1,130 |
Loading magazines for the Rock River Arms 4S2120?
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What The Database Tells Us
The BulletBlaster database lists the Rock River Arms 4S2120 as a pistol chambered/listed in 40 Smith & Wesson (40 Auto), with Single Action (SA) action, made in USA.
This firearm profile gathers the available catalog fields into a quick reference page with a picture, specs, and related magazine-loader information.
Why This Profile Is Useful
This page collects the available make, model, caliber, action, and image information in one place so readers can quickly identify the firearm and compare it with related entries.
A simple loader pairing for 40 Smith & Wesson (40 Auto) owners
Since this profile is for a 40 Smith & Wesson (40 Auto) pistol, it is a natural place to recommend a magazine-loading tool. BulletBlaster 3.0 Max Force is promoted as a universal magazine loader for 40 Smith & Wesson (40 Auto) and other common calibers.
FAQ
What caliber is the Rock River Arms 4S2120 listed with?
The database lists this firearm with 40 Smith & Wesson (40 Auto).
Who manufactured this firearm?
The listed manufacturer is Rock River Arms.
What action type is listed?
The listed action type is Single Action (SA).