Chuck sent us this photo of his AR-15 pistol (or is it a SBR?) with a Spikes pirate-themed “Jolly Roger” lower receiver. It is chambered in .300 AAC BLK and has a KAK Slim Flash Can. Note the engraving around the fire selector.
If you are not familiar with it, the KAK Slim Flash Can is not a suppressor, nor is it a flash hider or a muzzle brake. What it does is shape the muzzle blast, sound and flash forcing it forward. They are a popular mod for AR-15 pistols.