Tier One 30mm tube Picatinny Rifle Scope Mount Rings - Low 1 piece Precision CNC scope mount rings. Mil spec 30 micron hard anodised finish. Made in the UK Tier One Scope Rings are precision made on 5 axis CNC machineryOne of the key points to accuracy in manufacture is to minimise the number of operations required to complete the machining processTier One has invested in new technology and in doing this have been able to cut the number of operations required from eight to twoBy doing this, there is no accuracy loss due to re setting for different operations.All Tier One Scope Rings are made from Aluminum 7075T6 and have Mill spec 30 micron hard anodised finishBuilt in anti-cant bubble - A great feature that helps you eliminate cant in order to ensure your set up is precise and accurate.Sleek finish complements sporting or tactical rifles 30mm tube Low Height - approx upto 41mm scopes objective *OUTER* case diameter No lapping required when fitted to quality picatinny base rail Four screw ring caps for secure optic mounting Mill spec 30 micron hard anodised finish One hit machining to ensure repeatability Supplied in hard plastic case complete with Torx bits 7mm from base to bottom of ring - Height A = 22mm base to centre line.18mm length T1PIC30L