This is a 2024 test that is part of the CTS Late Order Purchase (LOP) plan. Credit card purchase only. Participants receive images containing a questioned shot pattern and known distance standards to determine the shooting distance range. Test material is available in two test formats (physically printed images with a digital downloadable supplemental file or digitally downloadable file). Samples ship in October.

Participants analyze an obliterated bar stock in an attempt to restore a serial number. Samples ship in March.

Participants examine and compare the firearm evidence provided (expended bullets or expended cartridge cases) to determine if the suspect weapon fired the questioned evidence. Samples ship in June.

Participants examine and compare the firearm evidence provided (expended bullets or expended cartridge cases) to determine if the suspect weapon fired the questioned evidence. Samples ship in October.

Participants examine the evidence samples provided to determine if the suspect tool was responsible for the marks produced on the evidence. Samples ship in January.

Participants examine the evidence samples provided to determine if the suspect tool was responsible for the marks produced on the evidence. Samples ship in September.

Participants receive an evidence item and are asked to determine the shooting distance. Samples ship in April.

Participants determine the entrance hole and directionality of a bullet hole; they also have an option to report horizontal and vertical angles as well as methodologies. Samples ship in August.