TFB Reader Gregor emailed us these photos he took of a semi 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. Much to the disgust of my shooting buddy, who […] Read More …

The post POTD: SBR Fireworks appeared first on The Firearm Blog. …read more