- Manufacturer: New Frontier Armory
- Model: Crush Washer
- Size: 1/2″ (.50″ ID) (5.56mm and 9mm)
Standard 1/2″ Crush Washer for AR-15 / AR-9 platforms. This crush washer will fit 1/2 x 28 threads (most 5.56mm / .223 / 9mm barrels).
The New Frontier Armory Crush Washer is proudly MADE IN THE USA by hard working American men and women.