This document summarizes a study evaluating the distribution of rapid at-home HIV tests to men who have sex with men. The study has four parts and aims to assess acceptability and use of the tests, frequency of HIV testing, linkage to care, risk behavior changes, and distribution to social networks. Eligibility requires being male, 18 or older, reporting male sex partners, and living in the US or Puerto Rico. The study has obtained approval to use a specific rapid HIV test and has completed the first three parts, with the fourth part ongoing since 2015. Part four is a randomized trial of test kit distribution to further evaluate public health benefits and linking those with reactive results to care.