Airtac James demonstrates the complete installation process of a T1P dead drop grip onto a Tokyo Marui Saiga-12 HPA adapter. It begins by guiding viewers through the removal of the factory grip and the subsequent attachment of the new grip's mounting plate using specific tools. The process continues with preparing the dead drop grip by removing its foot plate and tang, and then securely attaching the grip to the Saiga.

A significant portion of the installation involves modifying and routing the HPA adapter line. This includes replacing the original short line with a longer one, carefully feeding it through the grip, and securing it to prevent movement. The video concludes by showing how to secure the foot plate, finalize the HPA line by cutting it to length, and attaching the push fitting, resulting in a fully installed T1P dead drop grip on the Saiga.