Product Info for Primary Arms GLx Carry Handle Hardware Kit The Primary Arms Carry Handle Hardware Kit allows you to easily attach your favorite Primary Arms Prism or MicroPrism scope to your carry handle equipped AR-15 or AR10. The kit includes a 10-32x1/2in screw with a shaped washer to properly secure your optic to the carry handle. Enhance your rifle's capabilities with the Carry Handle Hardware Kit! WARNING: California`s Proposition 65 Specifications for Primary Arms GLx Carry Handle Hardware Kit: Manufacturer: Primary Arms Color: Black Features of Primary Arms GLx Carry Handle Hardware Kit: Compatible with Primary Arms Prism and MicroPrism scopes. Package Contents: Primary Arms GLx Carry Handle Hardware Kit High Strength Screw Shaped Washer.