The Apex Low Profile Safety Lever Set for the CZ Scorpion EVO 3 S1 fits both the pistol and carbine, and is compatible with the CZ folding stock. The Safety Levers are made from 6061 aluminum, hardcoat anodized black, with a machined indicator line. Requires 1.5mm Allen wrench to install. Direct drop-in replacement of factory safety lever Machined indicator line on each lever Fits the CZ Scorpion EVO 3 S1 pistol and carbine Maintains factory safety values Mfg: Apex Tactical Specialties Inc