Methods and systems are disclosed for a modular weapon sight assembly. A weapon sight may include a base, an optical bench, an adjuster assembly, and/or a housing. The base may be configured to be releasably secured to a weapon. The optical bench may include a plurality of optical elements attached to a unitary component carrier. A relative position of the plurality of optical elements may define an optical path of the weapon sight. The base, the optical bench, the adjuster assembly, and the housing may be configured as separate modules. For example, the optical path of the optical bench may remain constant during adjustment and/or replacement of the base, the adjuster assembly, and/or the housing. A change in position of the base, the adjuster assembly, and/or the housing may not alter the relative position of the plurality of optical elements with respect to one another.