Thread 1

•  1/2"-28 (4)
•  1/2"-36 (2)
•  5/8"-24 (7)

Subcategory

•  Flash Hiders (9)
•  Handguards & Forends (2)
•  Muzzle Brakes (2)
•  Muzzle Device Accessoies (2)
•  Upper Parts Kit (1)

Material

•  4140 Chromoly steel (4)
•  Aluminum 6061 (5)
•  Steel (2)

Thread 2

•  1/2"-36 (1)