Designed in Australia
Designed and engineered in Australia, for the ground and the conditions it will actually be used on. Australian properties, Australian weather, Australian bikes.
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Rail-Elevator-
Pivot-Pro.
REPP is the Australian business behind the P‑TAS — one product, invented by Ivan Mandelik, built to solve one problem properly.
01 Why it exists
Two compromises nobody had fixed — until the P‑TAS
Anyone who has taken a rifle out on a quad knows both of them. It was a real void in hunting off a quad bike — and it is where inventor Ivan Mandelik started.
The first is carry. A scabbard on the rack is fine until the ground gets rough, and then you spend the ride listening to your rifle move around and wondering what it is doing to your zero. Strapping it to the tray is worse.
The second is the shot. You spot something, and now you have to get off the bike, find something solid to lean on, and build a position from nothing — usually while the animal is deciding what it thinks of the noise you just made. Bipods sink in soft ground. Bonnets are the wrong height. Most of the time you end up shooting off something you would not have chosen.
The P‑TAS was built because those are the same problem wearing two hats. The rifle needs to be held securely on the bike, and it needs to be held steadily off the bike. Once you accept that one piece of engineering can do both, the design almost writes itself: a rigid platform on the rack, a way to raise it, and a way to move it.
From stowed to scope in seconds. Powered elevation, precision stabilisation — one unit that carries the rifle and shoots off it.
Ivan Mandelik’s brief for the P‑TAS
02 The name
What REPP and P‑TAS stand for
The business is REPP — Rail-Elevator-Pivot-Pro. The product is the P‑TAS — Pro-Target-Acquisition-System. Four words each, and every one is a part of the machine rather than a piece of marketing.
R
Rail
Twin stainless steel plated rails, capped at one end with the Kolpin stock rest as the stop at the other, riding high-capacity sliding linear bearings. This is the traverse axis — 800 mm of travel to track a target left to right without breaking your rest.
E
Elevator
The 12-volt powered electric elevator — a motorised scissor lift driven by a linear actuator off the bike's own electrical system. This is the vertical axis, 100 mm to 300 mm, and it runs off your thumb.
P
Pivot
The swivel ball head at the centre of the carriage: 360 degrees of rotation, extreme tilt, and a quick-release receiver that takes three different rifle mount standards.
P
Pro
The standard the components are specified to. Professional-grade swivel head as used on hunting tripod stands, high-tensile powder-coated steel and alloy, stainless plating where it has to stay smooth.
03 How it was built
Twelve months. Prototype after prototype.
From a simple idea to the birth of a genuinely new shooting and hunting aid: over twelve months and literally thousands of hours of designing and redesigning, building prototype after prototype — each one more functional and more workable than the last.
The unit in this photograph is one of those development prototypes, in bare metal before powder coating, with Ivan at the bench. It is the article the P‑TAS was proven on — rigorously tested in the field, on a real bike, on real ground.
That matters more than it sounds. A shooting platform that works on a bench does not necessarily work bolted to a machine that vibrates, gets loaded up, gets washed down and spends its life outdoors. Every decision in the finished product came out of that testing.
Stainless steel plating on the rails, because the traverse surface is the one thing that cannot be allowed to get sticky. An end stop at each end of the travel — caps on one side, the Kolpin stock rest on the other — because a carriage that can run off the end of its rails eventually will. A scissor mechanism for the lift, because it rises straight up instead of wandering fore and aft as it goes. Self-centering push buttons on the bars, because anything that makes you let go of the controls to use it is a thing you will stop using.
The rest is materials: high-tensile powder-coated steel and alloy, specified to take recoil, constant vibration and harsh weather without needing to be babied. The lift is rated to 80 kg.
Watch the prototype run04 How we work
One product — the P‑TAS — done properly
REPP is not trying to fill a catalogue. There is one thing to get right.
Fits a standard rack
The base frame is designed to fit the standard ATV cargo rack already on your bike. No cutting or drilling of the chassis. Mounting it is the owner's job, and anything that is not a standard rack is a DIY fit to suit your own ATV.
No pre-orders
Tooling is finished and the build run is live. When you order, you are buying a unit that is being manufactured — not funding a concept and hoping. The first batch is 50% sold out, with expected delivery by 31 January 2027.
05 Get in touch
It’s alive — and it’s yours to order
Especially about mounting. The P‑TAS is designed to fit a standard ATV cargo rack, and how it goes onto your machine is your job — so read the DIY fitting guide first, then send us whatever it leaves open.
