секретный немецкий инжиниринг
To make the gun work, they had added grooves in the chamber, so that some of the gas would press on the exterior of the case to release it. The main fault of the CETME rifle is that as soon as the climate gets moist, firing the gun without immediately cleaning it results in sticky cases. This design of the roller locking system is only good for lightly-powered ammunition. We had a very fortunate thing happen; the Germans had improved the gun enough so that it functioned, but later on I learned that Heckler & Koch had a trick up their sleeves. All of the guns were tested, and they had seven different-sized sets of rollers, so that if there was a problem they would put other rollers on the locking mechanism. They would change the rollers until everything worked properly!

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