These are lathe cut supressor alignment rods. Cut out of W1 tool steel on a lathe, chamfered. 16" in length. Laser engraved with caliber for easy ID. I have seven callibers available. First rod is $30, $20 for each additional (as many as you want). 5.56mm, .22LR,6.5mm, 7.62mm, 8.6mm, 9mm, .45cal available.
Free
