Aluminum Alloy Mil-Spec Castle Nut Lock Collapsible Stock 5.56/223 Back Cap Nut

Material: Aluminum Alloy 

Diameter: 3.5cm / 1.3"

Height: 0.9cm / 0.35"

Color: Black
 

- Made to the highest degree of Mil-Spec tolerances.

- Constructed from heat-treated ordnance steel.

- MIL-DTL-16232 manganese phosphate for corrosion resistance and increased durability.

- Machined notches for use with staked latch plates.

- Fits Ruger Precision Rifles with collapsible stock.