Umarex DS11 1911 NBB CO2 BB Pistol Field Test Review
I took the Umarex DS11 1911 NBB CO2 4.5mm BB Pistol out to the Replica Airguns Indoor Shooting Range today for some hands-on testing to see how it performs in real-world conditions. I haven’t filmed the full Table Top Review Video for this model just yet, but that’s coming soon. For this initial session, I wanted to focus strictly on performance, specifically testing velocity and accuracy. I ran a quick multi-shot chronograph session to get an average fps reading and followed that up with a 10-shot grouping test at 30 feet to get a practical sense of how accurate this pistol is right out of the box.
For the chronograph test, I used a fresh 12-gram CO2 cartridge and standard 4.5mm steel BBs. The room temperature was about 20°C. I noticed the velocity seemed to climb slightly as the CO2 settled in, so I averaged out the last five readings for consistency. Those shots came in at 386, 383, 377, 385, and 377 fps, giving an average of 382 fps. That’s very close to the manufacturer’s claimed 400 fps, and I’d expect it to reach or even exceed that number under warmer conditions. Overall, the DS11 delivered solid and consistent power for a non-blowback CO2 pistol.
Moving on to accuracy, I set up a target at 30 feet and fired from a semi-rested position, seated on a stool with my hands braced against a sandbag for stability. The Umarex DS11 1911 NBB CO2 4.5mm BB Pistol shot impressively well-centered right out of the box, which is a big plus since the sights are non-adjustable. My 10-shot group measured about 2.5 inches, with several rounds landing right in the bullseye. With a bit more trigger time and familiarity with the gun’s feel, I’m confident I could tighten that group even further.
All things considered, the Umarex DS11 1911 NBB CO₂ BB Pistol makes an excellent entry-level 4.5mm BB pistol for anyone looking for a tactical-style 1911 that’s affordable, reliable, and fun to shoot. Despite its simple, mostly polymer build, it looks great and feels comfortable in the hand. You can expect over 100 shots per CO₂2 cartridge, making it efficient and economical to shoot. Performance-wise, it’s got good power, accurate shooting right out of the box, and a straightforward design that should prove dependable over time.
In short, the Umarex DS11 1911 NBB is a great budget-friendly option that doesn’t sacrifice performance, and I have to say, it looks sharp for a basic, non-blowback BB shooter.