New Gun Show, Holtsville Long Island NY, May 4th and 5th, over 120 tables filled. located at the IBEW Local 1049, 100 Corporate Dr. Holtsville, NY 11742. Open Saturday 9am-4pm and Sunday 9am-3pm. Snack bar available. children 12 and under free admission with parent or guardian. $10.00 days admission. There will be firearms, knives, gun parts, accessories, memorabilia, targets, and more. Come check it out! Thank You.