You can choose 11 mm or 20 mm free scope mount  
<br />
<br />Carl Zeiss 2-7X32 Tactical Riflescope Adjustment Outdoor Rifle Scope Reticle Sight For Airsoft Hunting With Scope Mounts
<br />Specification:
<br />Magnification: 2X - 7X
<br />Length:29cm(about 1cm error)
<br />Tube Diameter: 25.4mm
<br />Objective lens diameter:32mm
<br />Exit pupil distance:8cm
<br />Illuminated:No
<br />Differentiation Material: Metal Wire Differentiation
<br />Click value:1Clik=1/4MOA
<br />Shock proof,water proof,Fog proof:yes <p> <b><b><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-2-orgin.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-3-orgin.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-4-orgin.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-5-orgin.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/5afc3f3ce3d64327a3949cad-6-orgin.jpg></b></b></p>