Correct

上膛

/ shàngtáng / 
Strokes

Definition

roof of the mouth/to load (a gun)

Example

As a Verb

load a gun

1
Zǐdàn
子弹
shàngtáng
上膛
le
了
  
。

The gun is loaded.

2
Yī
一
zhī
支
shàng
上
le
了
táng
膛
de
的
qiāng
枪

a loaded gun

As a Noun

palate