Tequila PCP Airgun

The proposed of have the front sight and rear sight in the Barrel Assy (3) is because this is a multi calibre gun. To change calibre the user only need change the following parts: thread bushing (1), push pin (2) and barrel assy (3). If the front and rear sight are in the same part the user only zero one time.

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Oh i see!!! Really nice and well thought out design!!! Aside from different caliber barrels is there a possibility for different barrel lengths as well ? (longer or shorter ones). Really looking forward to seeing the second prototype taking shape!!!