Used this product for a cosplay where I modified it to resemble a 9mm Colt SMG, which it's very close to dimensionally. The people who claim the gun is any smaller that what's listed in the photos and product details are incorrect. The gun is the exact size that's listed. This is not a 1:1 model of the M4 and it doesn't claim to be, but it's still larger than most other listings for similar products. The details on the gun itself are incredible, and even minute details are the same when put next to a real m4. I cannot speak to it's effectiveness as an airsoft gun, but as a prop it is very excellent.