Abstract: A safety selector assembly for a firearm is provided. The safety selector assembly can include a core member and one or more levers removably coupled to the core member. The core member can include a first end and a second end. The core member can also include at least one shelf recessed into the outer surface of the core member. The core member can also include at least two throws disposed on the core member and between the shelf and the second end of the core member. Each throw can have a different angle of rotation between positions for allowing and preventing movement of a trigger assembly on the firearm. The core member can also include a first post on the first end and a second post on the second end of the core member. A lever can be rotatably coupled to each of the first and second posts.

Abstract: A gas block comprising a gas tube channel, a barrel channel, a gas port extending from the gas tube channel towards the barrel channel, a slot extending disposed between the gas port and the barrel channel, and an adjustment mechanism set within the slot and movably coupled to the gas block.

Abstract: A safety selector assembly for a firearm is provided. The safety selector assembly can include a core member and one or more levers removably coupled to the core member. The core member can include a first end and a second end. The core member can also include at least one shelf recessed into the outer surface of the core member. The core member can also include at least two throws disposed on the core member and between the shelf and the second end of the core member. Each throw can have a different angle of rotation between positions for allowing and preventing movement of a trigger assembly on the firearm. The core member can also include a first post on the first end and a second post on the second end of the core member. A lever can be rotatably coupled to each of the first and second posts.

Abstract: A method of treating neoplastic growth in a subject includes administering a glutamine synthetase (GS) inhibitor to the subject having neoplastic growth. A glutamine synthetase inhibitor may be administered in combination with thalidomide, lenalidomide and/or pomalidomide. Responsiveness to thalidomide, lenalidomide or pomalidomide therapy is determined by the expression levels of glutamine synthetase in neoplastic cells.

Abstract: A block game includes thirty-six indicia blocks. Each of the blocks has an indicia face which is divided into two square faces. In each of the square faces, dots are arranged in three horizontal rows, with each row having one or two dots. Moreover, the dots on each indicia face are arranged symmetrically about an axis of symmetry of the indicia face. In play, two indicia blocks are positioned adjacent to one another in such a manner that an edge of the first square face which has one dot lies adjacent to an edge of the second square face which has two dots, or vice versa.