A review of the PSA Guardsman 300 Blackout, a budget AR-15, has been conducted to assess its suitability for home defense. The review is one of several evaluations of firearms from Palmetto State Armory, with other outlets comparing various PSA models, including pistols and rifles, and examining their features and performance. The specific findings and comparisons of the PSA Guardsman 300 Blackout review are not detailed in the available information.