EOTech announced a new holographic weapon site called the 518. The EOTech 518 is an evolutionary advancement of the highly popular model 512 that is found on many AR-15 rifles.
The 518 uses AA batteries – alkaline or lithium – and quickly attaches to the Picatinny rail on any AR receiver. Alkaline batteries will power the sight for about 600 continuous hours, while a pair of lithium batteries will keep it running for about 1,000 hours.