22LR adventures Aitutaki AR-15 blog box-fed Coldplay Cook Islands deer-stalking defense escopeta gamma-ray spectrometry guns history hunting indigenous M&P 15-22 music night-vision outdoors Pacific Ocean paradise Polynesia Pulsar radiation detector radionuclide identification Rendlesham Forest review rifle scope semi-auto shooting Smith & Wesson sport stalking tactical thermal scope Thermion 2 tour travel tropical Webley & Scott Will Acheson William Acheson XP50 Yellow