Ambidextrous straight pull bolt action with rotative closing slugs comprising a bolt body or casing having a square cross section of 3 x 3 and 14.5 cm in length, housing inside it the following movable parts: a) a hollow main cylinder with three closing slugs on its head, the three closing slugs being located as an upper closing slug and other two closing slugs at 120° on either side in respect of the upper closing slug, the hollow main cylinder having a side cut at 45° in respect of the upper closing slug, the upper closing slug having, at the front of the head, a pin with a recess and a pin spring which, upon coming into contact with a chamber of a weapon, will allow the closing slugs to rotate, whereas the pin spring blocks the closing slugs from rotating when the upper slug is not in contact with the chamber, b) a movable claw extractor and an active ejector being located together with the recessed pin in the front part of the closing slugs, c) a second hollow cylindrical body fitting inside the first or main hollow cylindrical body, a top half of the second hollow cylindrical body being open at the front with two flat gears resting on the right and left inner sides of the second hollow cylindrical body, the second hollow cylindrical body having on the rear outer side a screw holding a bearing that fits inside the cut of the hollow main cylinder, d) three single gears (02, 03, 04C) plus a double gear (04 and 04B), wherein the double gear 04 and 04B) and another identical gear are attached by a shaft to impart movement to the flat gears on either side of the second hollow cylindrical body, e) a firing pin or striker with a shroud, with a corresponding tooth fitting inside a trigger, and a spring that passes in the hollow main cylinder and the second hollow cylindrical body upon going through a fixed arm or striker body holding element which is part of the bolt body which encompasses the hollow main cylinder and the second hollow cylindrical body which fit inside one another, thereby allowing the movement thereof in the longitudinal direction of the weapon. a) a hollow main cylinder with three closing slugs on its head, the three closing slugs being located as an upper closing slug and other two closing slugs at 120° on either side in respect of the upper closing slug, the hollow main cylinder having a side cut at 45° in respect of the upper closing slug, the upper closing slug having, at the front of the head, a pin with a recess and a pin spring which, upon coming into contact with a chamber of a weapon, will allow the closing slugs to rotate, whereas the pin spring blocks the closing slugs from rotating when the upper slug is not in contact with the chamber, b) a movable claw extractor and an active ejector being located together with the recessed pin in the front part of the closing slugs, c) a second hollow cylindrical body fitting inside the first or main hollow cylindrical body, a top half of the second hollow cylindrical body being open at the front with two flat gears resting on the right and left inner sides of the second hollow cylindrical body, the second hollow cylindrical body having on the rear outer side a screw holding a bearing that fits inside the cut of the hollow main cylinder, d) three single gears (02, 03, 04C) plus a double gear (04 and 04B), wherein the double gear 04 and 04B) and another identical gear are attached by a shaft to impart movement to the flat gears on either side of the second hollow cylindrical body, e) a firing pin or striker with a shroud, with a corresponding tooth fitting inside a trigger, and a spring that passes in the hollow main cylinder and the second hollow cylindrical body upon going through a fixed arm or striker body holding element which is part of the bolt body which encompasses the hollow main cylinder and the second hollow cylindrical body which fit inside one another, thereby allowing the movement thereof in the longitudinal direction of the weapon.