Tag: sig552

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POTD: SBR Fireworks

TFB Reader Gregor emailed us these photos he took of a┬ásemi auto SIG SG552 with a short barrel. The combination of the 8.9 inch barrel, Primary Arms TTO compensator and ordinary 55 grains .223 ammo produces a huge muzzle flash, accompanied by rays of hot particles. [Read More…]