Check the listing for details. Benjamin Trail NP Mark II Air Pistol 0.177. Condition: New. Listed at 152.95 USD. Benjamin Trail NP Mark II Air Pistol Nitro gas piston Breakbarrel Rifled steel barrel Picatinny rail under barrel Single-shot Fiber optic front and rear sight Adjustable, removable rear sight 11mm dovetail rail Tactical, synthetic frame Includes removable cocking aid Up to 650 FPS with alloy, 525 FPS with lead Here are the benefits of the Nitro Piston: Smoother cocking Smoother shooting No spring torque No spring fatigue, even if you leave it cocked for hours Functions perfectly in cold weather Lasts longer than a metal spring "This listing complies with eBay's air gun policy and I will only ship air guns to buyers in jurisdictions where permitted to by applicable laws https://www.ebay.com/help/policies/prohibited-restricted-items/airsoft-air-rifle-bb-guns-policy?id=5642 This listing complies with eBay’s air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws {URL0}|PI_BLOCK_Airguns_BB_no_disclaimer_952593|952593|http://pages.ebay.com/help/policies/firearms-weapons-knives.html|http://pages.ebay.com/help/policies/firearms-weapons-knives.html|{URL0}