NX8 has zero stop on elevation and capped windage turrets.2k budget, the Gen 2 razor is tits. If weight is a concern, I'd go the NX8 line. You give up glass quality, elevation adjustment and features such as locking turrets and rev indicators, but it's a lot lighter. If he wants short, and I don't see why with that rifle setup, I'd go EOTech Vudu 5-25.