The M&P is a direct evolution of the unsuccessful Smith & Wesson Sigma design, however it does not share parts compatibility with the Sigma. The M&P design has an improved trigger, enhanced ergonomics that allow for end user customization. An industry standard picatinny rail, and a higher grip has been afforded with an improved grip and beavertail. Many of the ergonomic study elements that had been incorporated into the Sigma and the Smith & Wesson SW99 were brought over to the M&P. The improved trigger weight and feel, and unique takedown method (not requiring a dry-fire pull of the trigger) were meant to set the M&P apart from both the Sigma and the popular Glock pistols.

WE M&P T8B Custom Big Bird AUTO GBB Pistol (Vented/ SV / TAN)
Gas Blow Back Pistol with Fully & Semi Automatic Shooting Mode
Innovative Hop-Up Thumb Dial located inside the gun (can see after dissemble the slide)

Metal Slide (With Four Hole on Front to keep lightweight) And Polymer Frame Wave Cutting Design On Rear of Slide
Metal 105mm Silver Outer Barrel
Come With Tactical Trigger For more sensitive and fast trigger press
Front Sight & Rear Sight With Fiber Optic (Green & Orange)
20mm Picatinny Under Rail for tactical accessories (e.g. flashlight / laser)
Full Metal 24 round Loading Capacity One-Piece Magazine
Come with Six Different size and Color selective selective back straps (Small and Large / Pink and Tan)