This fascinating excellent rocket propelled grenade is similar to the US LAW (Light Anti-Tank Weapon) rocket and is completely inert. Amazing Cold War era military weapon.
The RPG-75 is a portable, disposable, single-shot anti-tank weapon, developed in the 1970s in Czechoslovakia. It fires a 68 mm grenade (the projectile is not a rocket) with an effective range of 300 meters and maximum range of 1000 meters. It resembles the American M72 LAW rocket launcher. This RPG is recommended to be used on light tanks and armored tracked vehicles
These are band new never opened and double sealed inside of two 6 mil bags. They have been since the day they were made. Most if not all have the dummy nylon warhead expanded at room temperature and prevents opening or closing the tube. If that happens to you, simply put the weapon some place cool, refrigerator or freezer for 30 minutes and the weapon will open freely. However, once it returns to room temperature, it will be stuck again. If that happens all you need to do is cool it back down and remove the dummy HEAT round the lightly sand the dummy round with fine wet sand paper until it fits easily back in the tube.
The Czech Army RPG SK75 is a training rocket that was made to instruct Czech soldiers how to operate the RPG-75 anti-tank weapon. The weapon is identical to the fully functional live ones with just a view exception. It’s firing mechanism is fully functional including the firing pin. A small rubber plug is in the primer pocket. So when you extend the tube pop up the sights remove the safety pin then hold down the top safety while you press the trigger. Then the striker with firing pin will fire, so if you had a live primer installed it would have fired. Also, the only dummy part they put in it was a solid nylon HEAT warhead.
These Anti-tank training weapons are nearly identical to the live ones. The excellent pop-up sights have range finding reticle, The entire firing mechanism is intact and functioning including the sticker and firing pin. The weapon has incredible tight tolerances and precision fitted and the finish is excellent. A dummy HEAT warhead is fitted where a live one would be. When the launcher is extended the firing pin will strike the tube where a live primer would be on its live counterpart. What I am trying to say, you could file a form 1 with the ATF for a permit to activate this weapon since it has all the parts as new , all you would need to do is make the projectile you want to lunch , load it in to the tube and remove the rubber plug where a primer goes, press in a live primer and you are ready to go. But do not attempt to activate one unless you have the correct FFL or you file a Form 1 with the ATF.
Once you have your ATF approval you can activate the weapon.