Erik. if you look closely at the BR Tuote reflex, you will see that it is made out of mild steel,(which doesn't realy mean a bad thing) but it is very very prone to corrosion, you cant strip the thing to clean it, the spot welds break, the mild steel cracks and or corrodes through.
The reflex would be great if it cost around 50 pounds UK price, but for 180+ i'd expect something with a bit more quality. Unfortunately its a good idea let down by poor materials and manufacture.
The Brugger & Thomet you can see on the first pics on this thread is just the opposite, it is exquisitly machined from high quality materials, costs over double what the reflex costs but you could park a truck on one.
The disadvantage of the B&T is that its all forward of the barrel thread, and its heavey.
The A-tec slots back over the barrel only extending barrel length by about 14.5cm and weighs only 500g. is made of alloy and stainless steel and is a **** good comprimise between weight, size, price, quality of materials and workmanship whilst also bieng very effective. strippable, modular, meaning you can replace parts should the need arise.
Pete