If you own a Blow blank gun, or you’re thinking about buying one, there’s one detail that quietly decides how confident you feel holding it: the magazine. How many rounds it holds, how quickly you can reload, and whether you have a spare ready can be the difference between a tool that just looks the part and one you can actually rely on in a stressful moment.
This guide breaks down every Blow blank gun magazine capacity across the most popular models sold in South Africa — the F92, P29, TR17, TR14, TR92, TRZ914 and C75 — and explains why a spare magazine is one of the smartest, cheapest accessories you can add to your kit.
Why Blow Blank Gun Magazine Capacity Matters
A blank gun works on the same principle as a real self-defence pistol: it uses the loud bang, muzzle flash and realistic handling to deter a threat. In that split second when someone is trying to intimidate an intruder or attacker, a higher-capacity Blow blank gun magazine gives you sustained deterrence without fumbling to reload.
Most Blow pistols are chambered in 9mm P.A.K. (the standard blank cartridge in South Africa) and use a double-stack magazine, which is why full-size models hold 14 to 17 rounds. Compact models trade a little capacity for concealability. Neither is “better” — it depends entirely on how you plan to carry and use the gun.
Before we get to the table, it helps to understand one small piece of shorthand.
What Does “16+1” or “17+1” Actually Mean?
You’ll see capacities written as “16+1”, “17+1” or “14+1”. The first number is how many rounds the magazine holds. The “+1” is the extra round you can load directly into the chamber, on top of a full magazine.
So a Blow F92 listed as 16+1 means 16 blanks in the magazine plus 1 already chambered — 17 rounds total before you need to reload. It’s a small detail, but it’s the kind of thing new buyers ask about constantly, and it matters when you’re comparing models side by side.
Single Stack vs Double Stack: How Blow Blank Gun Magazines Are Built
The reason a full-size Blow holds so many more rounds than a slim compact comes down to how the cartridges are arranged inside the magazine.
A double-stack magazine staggers rounds in two columns, which is why models like the F92, TR92 and C75 reach 16 to 17 rounds while keeping a manageable grip width. A single-stack magazine lines rounds up in one column — slimmer and easier to conceal, but lower capacity.
Most popular Blow self-defence pistols use double-stack magazines, which is a big part of why the brand is so widely chosen for home defence in South Africa.
Blow Blank Gun Magazine Capacities: Model-by-Model
Here’s a clear comparison of the Blow models most commonly sold in South Africa. Note that capacities can vary slightly between retailer listings and production batches, so always confirm the exact figure with your supplier before buying.
| Blow Model | Magazine Capacity | Style / Notes |
|---|---|---|
| Blow F92 | 16+1 (some listings 17+1) | Full-metal Beretta 92 / Z88 replica, double-stack |
| Blow P29 | Single/double-stack | Compact Beretta 84FS replica, hammer-fired |
| Blow TR17 | 14+1 | Polymer frame, lighter and less corrosion-prone |
| Blow TR14 | 14+1 | Polymer frame, semi/full-auto variants available |
| Blow TR92 | 17+1 | Full/semi-auto, metal build |
| Blow TRZ914 / TR914 | 17+1 | Full/semi-auto, double-stack |
| Blow C75 | 17+1 | CZ75-style replica, metal/plastic body |
Blow F92
The F92 is a full-metal 1:1 replica of the iconic Beretta 92 / Vektor Z88, and it’s one of the most recognisable blank guns in South Africa. Its double-stack Blow blank gun magazine holds 16+1 (some retailers list it as 17+1), giving it serious presence and a realistic, heavy feel. If you want a full-size home-defence pistol that looks the part, this is the benchmark.
Blow P29
The P29 is a replica of the Beretta 84FS double-stack .380 pistol. Its frame dimensions match the 84FS, and it features a hammer-fired system with a single/double-stack magazine. Its barrel is blocked from the front so it cannot fire real bullets. It’s compact, user-friendly and often recommended for those who want something easier to handle and carry.
Blow TR17 and TR14
These two share a common advantage: a polymer frame. Both hold 14+1 rounds, and because the frame is polymer rather than metal, they’re lighter and — importantly for coastal owners — far less prone to the scuff-related corrosion you get on all-metal guns. The TR14 and TR17 come in semi-automatic and, in some variants, full-auto configurations.
Blow TR92, TRZ914 and C75
These are the high-capacity full-size options, each fed by a 17+1 double-stack Blow blank gun magazine. The TR92 and TRZ914 are full/semi-auto pistols with a metal build and a genuinely loud report. The C75 is a CZ75-style replica with a metal and plastic body. For buyers who want the highest capacity and the most intimidating presence, this trio is where to look.
Spare Magazines: The Accessory Most People Forget
Here’s the honest truth: most people buy a blank gun and never think about a spare Blow blank gun magazine until the one they have starts to wear, jam or rust. That’s a mistake. A spare magazine is inexpensive — typically R295 to R445 in South Africa — and it solves several problems at once.
Faster reloads. Instead of topping up an empty magazine round by round, you drop the empty and slot in a full one. For self-defence or training, that speed matters.
A reliable backup. The magazine is the part of any pistol most likely to fail. If your primary magazine’s spring weakens or the follower sticks, a spare keeps your gun functional.
Longer gun life. Rotating between two magazines spreads the wear, so neither one gets worn out prematurely.
One Magazine, Many Models
A useful thing to know about Blow is that many models share a compatible magazine design. Retailers commonly stock a single spare Blow blank gun magazine that fits a whole range — the MINI 9, F92, P29, TR34, TRZ914, TR914, TR14, TR92, UZI, TR17 and CZ75 among them. The F92 spare magazine, for example, is a 16+1 double-stack 9mm P.A.K. unit that is also compatible on the MOD 92. That “buy once, fits many” flexibility makes stocking a spare even more worthwhile.
Always confirm the exact model variant with your supplier before ordering, since a magazine that fits the F92 won’t necessarily fit a compact like the P29.
Looking After Your Blow Blank Gun Magazine
Every Blow blank gun magazine has one weakness worth understanding: corrosion. The hull on many of these magazines is thin sheet steel — around 0.5mm — and pitting is a common problem, especially if you live near the coast or any salt water.
A few simple habits keep them in good shape:
- Wipe and oil regularly. A light protective oil such as Ballistol, Q20 or a similar rust-preventer, applied to the magazine exterior, goes a long way toward stopping corrosion before it starts.
- Inspect often if you’re coastal. Owners in coastal regions should check their magazines frequently for early signs of rust.
- Treat light rust early. Surface corrosion can usually be cleaned off with a wet dishwashing scrubby, or a brass wool scrubby for more stubborn spots.
One more practical tip: even though a magazine is rated for its full capacity, some owners find that loading right to the maximum can make the top rounds fit a little loose. Those loose rounds will still chamber fine, but if you notice it, loading one or two rounds short can give smoother feeding. Polymer-framed models like the TR14 and TR17 are naturally less affected by exterior corrosion because of their frame material.
A Note on the Law in South Africa
Blank guns currently don’t require a firearms licence in South Africa, and you must be 18 or older with valid ID to buy one. However, it’s worth being aware that in 2025 the South African authorities gazetted draft proposals to tighten controls on the import of blank guns, citing their misuse in crime. Regulations may change, so buy from a reputable supplier and always handle your blank gun responsibly — if it looks real, it can be treated as real in an incident.
The Bottom Line
For most South African buyers, the sweet spot in the range is a full-size double-stack model — the F92, TR92, TRZ914 or C75 — all offering 16+1 to 17+1 rounds of confident, ready-to-go deterrence. If you want something lighter and more corrosion-resistant, the polymer-framed TR14 and TR17 at 14+1 are excellent, easy-carrying choices. And the compact P29 suits anyone who prioritises a smaller frame.
Whichever you choose, do yourself one favour: buy a spare Blow blank gun magazine at the same time. At under R450, it’s the cheapest upgrade you can make to your peace of mind — and with Blow’s shared magazine design across so many models, one spare often covers more than one gun in your collection.
