Note · 6136 m.12 · m.13
“Did You Modify It Yourself?” the answer that decides between article 12 and article 13
Converting a blank-firing gun so that it can discharge a live round is punished under art. 12 of Law no. 6136 — five to twelve years — because a paragraph added on 21 November 2024 deems the alteration manufacture. Buying, carrying or possessing a gun somebody else converted is art. 13/1: two to four years. The laboratory report that classifies the weapon does not say which of the two you did. Your own words usually do.

Two articles, and the fact that separates them
Law no. 6136 does not treat a converted blank gun as one offence. It splits the conduct in two, and the split falls on a single fact: whether the alteration itself is attributed to you.
| Conduct | Range |
|---|---|
| Art. 12, conversion paragraph — altering the technical characteristics of a blank- or gas-cartridge gun so that it becomes a weapon subject to Law 6136 | Punished as manufacture under art. 12: five to twelve years and a judicial fine of five hundred to five thousand days, reduced by one third to one half where the converted weapon is not grave in number and nature |
| Art. 13/1 — buying, carrying or possessing a firearm contrary to this Law, expressly including a weapon converted from one firing blank or gas cartridges | Two to four years and a judicial fine of one hundred to five hundred days |
| Art. 13/3 — a single firearm not of the aggravated type, with a usual number of cartridges, kept at a home or workplace | One to three years and a judicial fine of one hundred to five hundred days |
| Art. 3/1(a), Law no. 5729 — carrying a blank gun the laboratory finds unaltered; art. 3/1(a) states the prohibition, art. 4/2 the sanction | Administrative fine under art. 4/2, together with an order transferring ownership of the weapon to the state; both are imposed by the local civil administrative authority under art. 4/4 |
What the 2024 paragraph changed
Law no. 7533 added the conversion paragraph on 21 November 2024. Altering a blank-firing gun into a weapon subject to Law 6136 is now deemed manufacture outside Law no. 5201, which is why it carries a manufacturing range rather than a possession one. The paragraph reduces the penalty by one third to one half where the converted weapon is not grave in number and nature — a real reduction, applied to a five-year floor.
Art. 13/1 was drafted in the same direction: it names converted blank guns alongside real firearms, so possessing one is an offence whether or not anybody can say who converted it. What art. 12 adds is the allegation that you made the gun what it is.
What the laboratory report can and cannot prove
Whether your gun is a firearm at all is decided by a criminal laboratory report — not by the shop, the receipt or what you believed you were buying. The report examines whether the barrel obstruction has been removed or bored through and whether the weapon can now discharge a live round. That finding is what moves a file out of Law no. 5729 and into Law 6136. Its limits matter as much as its conclusion.
- It describes the weapon as it is now. Barrel plug removed, chamber opened, capable of firing live ammunition — these are observations about metal.
- It does not identify who altered it. That is outside the scope of a ballistic examination.
- It rarely fixes when. Whether the work was done before or after the gun reached your hands is not usually readable from the object.
- It does not decide the article. The report classifies; the prosecutor characterises; the court decides.
Art. 2/2 of Law no. 5729 requires blank-firing guns to be made so that they cannot be converted, and to be marked by colour and shape so as to be distinguishable from real firearms. That duty falls on the maker, and its breach does not protect the holder. It does explain how converted guns circulate: the last pair of hands is often the only one the file can reach.
The question in the interview room
The question is asked in almost every one of these files, usually within hours of the seizure and often before a lawyer has arrived. It sounds like small talk about equipment. It is the element of the offence.
Three kinds of answer create an art. 12 problem, and none feels like a confession at the time:
- The helpful technical detail. Explaining what was done to the gun, to show you understand guns and have nothing to hide, describes the alteration in your own voice.
- The half-admission. “I only opened it a little”; “I had it adjusted so it would fire better.” Adjustment and alteration are the same thing once the barrel is open.
- The invented explanation. A story told to avoid naming someone tends to collapse later, and the truthful part of your account is then treated as no more reliable than the rest.
The wording problem
These questions are technical in a language most defendants do not have. Tadilat covers modification, adjustment and repair alike; namlu tıkaçı is the barrel plug. Under CMK 202/3 the investigation-stage interpreter is appointed by the judge or the prosecutor, and that appointment is no background detail in a file where one verb decides the article. If a question is not understood, say so and have the fact recorded; what can be done afterwards is set out on the page on interpreters and language rights.
CMK 147 requires that you be told, before questioning begins, that you are not obliged to make a statement. Declining a question you cannot answer accurately is not an admission, and it is far easier than removing a sentence from the record later.
What else turns on which article is written
The distance between the two articles is not only the sentence. It changes the court, the remand position, and whether the case can end without imprisonment.
The court. Under art. 12 of Law no. 5235 the ağır ceza mahkemesi hears offences requiring more than ten years, and art. 14 fixes jurisdiction on the upper limit written in the article, with aggravating and mitigating causes left out of account. Art. 12 of Law 6136, at twelve years, is therefore an ağır ceza case; art. 13 is heard by the asliye ceza mahkemesi.
Remand. Art. 12 of Law 6136 is named in CMK 100/3, the catalogue in which a ground for remand may be presumed where strong suspicion rests on concrete evidence. Art. 13 is not, so flight risk or interference with evidence has to be established in the ordinary way, and is often answered instead with judicial control under CMK 109 — including the travel ban in CMK 109/3. That decision is explained on the page on remand and judicial control.
Whether you serve it. A sentence of two years or less may be suspended under TCK 51, and under CMK 231/5 a court may defer announcement of the judgment where the sentence is two years or less, with a five-year supervision period. Art. 13/1 reaches those thresholds only if the sentence lands at its two-year minimum. Art. 12 does not reach them at all: even the fullest reduction the conversion paragraph allows leaves a five-year minimum at two years and six months.
The rest of Law 6136 — the aggravated ranges, the knife articles, the situations moved to administrative fines in 2024 — is set out on the page on firearms, blank guns and knives.
Three questions that come up first
I bought the gun already converted. Does that help me?
What if the laboratory finds the gun was never altered?
If the judgment is deferred, do I get the gun back?
Where this leads
Reach the duty desk
Tell us where the person is and what they have been told. An enquiry commits you to nothing. If it is urgent, message or call rather than write.