We NO Longer Have Access to the 3D Files to Produce This Frame. Because of This We Will NO Longer be Stocking This Item PRE-CHARGING YOUR DEFENDER CARTRIGES: The Defender Cartridges have a replaceable rubber seal and may loose pressure over a period of months or years. However we have tested their ability to hold pressure over a two year period of time and about half of them held full pressure over this two year period of time! FRIENDLY NOTICE: Please read below the DISCLAIMER and the SHIPPING & RETURNS POLICY carefully before you purchase. We appreciate your patience. We do not accept returns or exchanges unless the item you purchased is defective. This listing complies with USA air gun guidelines and I will only sell and ship airguns to buyers in jurisdictions where permitted by applicable laws. Warning Must be 18 and over to purchase airguns. Please check local and state laws. Never point airguns at a person or any living thing. Airguns can cause serious injury or death. Review manual prior to initial use. High Quality Precision Semi-Automatic Airguns