A close look by Stu at the Delta Armory Optics available at Patrol Base. Available are red dot sights, LPVOs, as well as the ACOG and EOTech-style optics... "Delta Armory was established in 2019, offering a range of M4/AR-15 AEG Airsoft guns, upgrade parts, complete gearboxes, flat HOP-up kits and now optics!"