The most common and most likely answer to this crossword clue is the 7 letter word MOCK-UP
M
O
C
K
-
U
P
More clues leading to the result MOCK-UP
Buddy explains!

The straight part
We know that "Model" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case model = mock-up.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MOCK-UP mean?
MOCK-UP noun- A prototype, usually low-fidelity, such as paper illustrations, screenshots, or simple configurations of screens with limited interaction.