I got the G5 OPTIX ME and yes thescrews broke on one of the pins ( after i over tightened it )and within a week they sent me all new ones ( a full set ,to the UK ), which are upgraded to better and tougher material and i have had no problem what so ever . I find it a great sight ( get one , just ask if the pins are upgraded , if not G5 will send you some anyway ) . There is no problem with G5's after sale service either , they were great .