Gemtech Quickmount Flash Hider 7.62 mm 1/2-28 Black. 62mm QUICKMOUNT is a precision machined heat treated suppressor adapter. It is available in a number of thread patterns to fit most popular 7.62mm rifles currently on the market. There are two main types of QUICKMOUNTS available: Tensioning and Standard "Phantom" style mounts. The Tensioning style which is generally for longer bolt action rifles not requiring a true flash hider. It is threaded from the front telescoping back over the barrel which must be specially profiled to fit this mount. This makes a shorter overall profile moving the suppressor back further and also tensions the last inches of barrel for accuracy. It has no flash hider slots as this portion of the mount is behind the crown The Standard 7.62mm QUICKMOUNT fits our HVT QUICKSAND and older TPR-S suppressors. It features a more conventional flash hider design and is available in the most thread pitches for a wide variety of host weapons such as: 5/8-24 (DPMS Armalite etc.) M18x1mm (Sako TRG or Tikka Blaser LRS) M18x1.5 (Accuracy International) M14x1mm LH (AK-47) 9/16-24 LH ( FN FAL) and 1/2-28 (does not fit 5.56mm suppressors some 6.8SPC and 6.5 rifles use this pitch and it may be used to fit an HVT or QUICKSAND for subcaliber usage on 5.56mm weapons) M15x1mm (HK 91)and M13x1mm RH ( Galil). As a safety feature our 5.56mm suppressors will NOT fit onto our 7.62mm adapters. Specifications for Gemtech Quickmount Flash Hider: Manufacturer: Gemtech Color: Black Caliber: 7.62x51mm NATO Fabric/Material: Steel Threads per Inch: 1/2x28 Weight: 1.78 oz Additional Features: Adapter for Gemtech TPR-S HVT-QM QUICKSAND and ONE Condition: New Package Contents: Gemtech Quickmount Flash Hider Gemtech 12156: Quickmount Flash Hider 7.62 mm 1/2-28 Black