The UZI PRO SB features a side-folding stabilizing brace produced for IWI US by SB Tactical. The UZI PRO SB can be fired without or without the brace extended, depending on the circumstance. The new UZI PRO uses advanced polymers in the lower section of the receiver resulting in lighter weight and relocation of the magazine release to a more traditional pistol-based location. The charging handle has been moved to the left side of the receiver. This allows the addition of a Picatinny rail to the top of the pistol, allowing the use of optics. An additional Picatinny rail is mounted underneath the barrel for the direct attachment of lights or other accessories. This compact semi-auto features adjustable target sights, manual thumb safety, firing pin block, and grip safety. Each UZI PRO pistol includes two magazines, one 20-round and one 25-round.