Triton show how to mount their magnifier to their StarStrike Series Night Vision Optics... "This mainly applies to the NV-101 which comes with a 2x magnifier. It should've came preinstalled but here is the general idea and torque specifications. To uninstall, simply reverse the process."

Venture Shop shows the features of the Triton DMR AEG from Poseidon Airsoft and they have this in stock at their store in Brazil... "The Triton Sniper is a powerful and effective DMR. With metal construction, it is extremely robust and intimidating. It has an adjustable stock, MFT style, retractable in 5 positions, ranging from 77 to 85 cm, according to the chosen position.