Translation needed

Anyone help with this bit of script on the side of a shotgun?

At a guess it's a makers mark of some sort - you'd probably need a gun expert to identify it.

I can't translate it because it looks Arabic to me. With more information about the gun itself, I might be able to help.

1: What gauge is it? 12 / 20 / 4-10 / other
2: Is it a boxlock, or sidelock?
3: It looks like it has two triggers so are the barrels side by side, or over and under?
4: Are there any other marks, like proof marks to show the barrels have been pressure tested?
5: Are the barrels smooth steel and 'blued', or are they the damascus type?

All this info might help determine the manufacturer.

Not too troubled about the manufacturer. It's a .410 single barrel based upon an Enfield action. Single trigger. I suspect the writing, assuming that's what it is, originates from the Indian sub-continent, but that's just a guess. It's a bit of a nail, but I'd like to know.

A translator acquaintance has provided the following:-

Masha'Allah
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For other uses, see Mashallah (disambiguation).

Mā šāʾ Allāh (ما شاء الله is an Arabic phrase indicating appreciation for an aforementioned individual or event. Towards this, it is used as an expression of respect, while at the same time serving as a reminder that all accomplishments are so achieved by the will of God. The closest English translation is "God has willed it", the present perfect of God's will accentuating the essential Islamic doctrine of belief in destiny (Qadar). It is used to show joy and praise. It is said upon hearing good news. Another reason people use this phrase is to prevent the evil eye or jinxing.

Example:

Person A: Friends of ours had a baby.
Person B: Masha'Allah!

The phrase is also used frequently by non-Muslims in the Arab World.

The phrase has also found its way into the colloquial language of many non-Arabic peoples, such as Persians, Turks (who say "maşallah"), Armenians, Bosniaks, Albanians and Muslims and Urdu-speakers of South Asia (who say "Masha'allah"), and some of the peoples of the Balkans who once lived under Turkish rule, including some who are not of the Islamic faith. A living example of this phenomenon is witnessed in the vernacular form of Cypriot Greek whereby speakers invoke Masha'Allah in a similar fashion to their Turkish counterparts.

In the Middle East, Mediterranean, and South Asia, "Masha'allah" is also said as a way of warding off the superstition of the evil eye. Often when one asks whether someone is ailing, "Masha'allah" is inserted into the sentence.

The triliteral of šāʾ is š-y-ʾ "to will", a doubly weak root.

I like Gareth's translation better.

I think it's upside down

If read from right to left and in the mirror it translates as
" May contain lead shot"...........................