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ptr91 gi

roller delayed blowback
Rifles

How It Works: H&K’s Roller-Delayed Blowback Operating System

August 1, 2016 by David Donchess Leave a Comment

The roller-delayed blowback system can be confusing at times to understand, but I hope this video is educational in understanding how G3/MP5 type actions work. The term "roller-locked" is an incorrect description due to how this system is designed. Unlike the FAL and other popular .308 rifles of yesteryear, the G3/PTR91/C308 do not use a gas system to cycle the heavy .308 … [Read more...]

ptr91
Rifles

PTR-91: A .308 Battle Rifle For Everyone

June 6, 2016 by David Donchess Leave a Comment

The PTR91 GI Model is a true Battle Rifle in every bit of the definition. It is durable, it has little recoil, it has great accuracy at range, and it is even modular. PTR really makes a winner with this model. This rifle has a long history before PTR got their hands on the blueprints and started making them in the US. The design can be a little finicky if not properly … [Read more...]

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