Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. Pistol Caliber Flash Hider
Shipping: All orders are shipped within 72 hours Monday - Friday 8am - 5pm PST
Any order containing a lower receiver will not be shipped until we receive a copy of your FFL. Once received regular shipping policies apply. Submit your FFL Here.
Returns: Quarter Circle 10 offers a 30 day return, refund and exchange policy. See Details.
A2-style flash hider
Disperses Muzzle Blast & Flash
Lathe-turned for pistol caliber compatibility
½-28 thread for 9mm barrels
⅝-24 thread for old-style .40 and .45 barrels
.578-28 thread for new-style .40 and .45 barrels
Crush washer included
*Flash hider + crush washer (included) add approximately 1 3/8 (1.375)" beyond length of barrel.