SPUHR SP-6602 36mm H38/1.5" 6Mil/20.6MOA BARREL ACCESSORY The first AMP regulator is

The first AMP regulator is placed just after the carbon fiber bottle (aluminum bottle on the lower-priced VP version) to reduce the initial pressure in preparation for the second regulator

7075 T6 aluminum

They're designed to stay open once they're extended and stay closed when not in use

3" inch Offset (CM-103)

5-15x50mm PHRII

SPUHR SP-6602 36mm H38/1.5" 6Mil/20.6MOA BARREL ACCESSORY The first AMP regulator is6 MIL 20. 6 MOA Height: 38 mm 1. 5" Length: 128 mm 5. 04" Weight: 273 g 9. 6 oz 10 degree wedge included Note: Will not fit the SAKO S20 or rifles with 2 piece rails. As of fall 2023, rear top covers will no longer feature alignment grooves.