Holding the bullet casing in his hand, Brother Tiger stared.

This shell looks ordinary, but it has corrugated patterns on it.

This pattern is normal on some bullets and has the effect of reducing wind resistance.

But for a person like Brother Tiger who has been on the battlefield when he was young, the moment he held the bullet casing, the thought engraved in his bones instantly floated.

This one ......

"The Peerless Doctor in the City" 166 returns are being hit by hand, please wait a moment,

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