Heizer def.Pocket ar ported.223 rem black matte FEATURES-USA Aerospace stainless steel frame & barrel-Ported barrel-Matte black finish-Small, flat design - size of a smart phone-Snag free design with recessed ambi-operating latches-Trigger module on roller bearings for a smooth trigger pull-Ergonomic grip with radius edge-6 3/8"L x 0.7"W x 3 7/8"H Other Features: Single shot, ported barrel