product details brand: aarmr sports aarmr sports national 375 magnum air rifle caliber .177 brand: aarmr sports specifications manufacturer aarmr sports caliber 0.177″ (4.5mm) velocity 1200fps overall length 1150 mm barrel rifled range (approx) 60-85 meters scope groove yes trigger adjustable trigger mechanism break barrel action single shot stock fiber stock with heel pad muzzle energy around 20 joules