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Kublai
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HK416 Front and Rear Mechanical Sight
the back center round hole is adjustable
fit for rails 20-21mm
material: abs
color: black
package: 1x front sight
1x rear sight
Order processing time: 1-3 business days.
Delivery time: 10-14 business days
Shipping fee: FREE
Shipping policy: https://www.kublai.shop/pages/shipping-policy
