A firearm spring compression tool includes a base configured for anchoring the tool in a magazine well. A yoke is mounted on the base and includes a pair of arms configured for capturing a delta ring (“D-ring”) or other component on a firearm. An actuator is rotatably mounted on the yoke and is rotatable between a first, placement position for placing the yoke over the uncompressed D-ring and a second, compressed, release position. With the actuator in its second position, the D-ring is compressed whereby a handguard component of the firearm is released for removal in connection with a firearm servicing procedure.