Swiss made B&T MP5 SD tri-rail picatinny ring new. This mounts to the HK spec suppressor tube and provides an extended platform for accessories such as lights, lasers, etc. This is the absolute best quality available for the SD.
This is not cheap airsoft production masquerading as a gun part. B&T Switzerland is an HK OEM manufacturer and produce top quality accessories for military and law enforcement around the world. This is a military grade part!
SPECIFICATIONS / SPECIAL FEATURES: * Part Number: BT-21278
* Condition: Factory New
* Color: Black
* Width - Diameter: 57.5 mm
* Length: 44.5 mm
* Length of Rails: 30 mm
* Weight: 82 g
* Material: Aluminum
* Treatment: Hardcoat Anodized
* B&T Description: B&T ring 3x NAR (NATO Accessory Rail) for HK MP5 SD