The Leapers UTG Rubber Rail Guard with Flexible Adjustment (Dozen/Pack, OD Green) is designed to protect Picatinny rails along with your hands. The Leapers UTG Rubber Rail Guard is made with high quality rubber that is made to withstand extreme heat and extreme sub-zero cold. The Leapers UTG Rubber Rail Guard 12-pack gives you the tactical solution for improved grip, comfort and durability.