Castle Lock Nut M4/AR15 Receiver Extension Locking Castle nut Fit .223 5.56 Collapsible Butt Stocks Tube


It will fit any Mil Spec. or commercial diameter stock mount. This ring mount fits most collapsible butt stocks such as the ATI, Colt , Leapers Utg, most Tapco Inter-fuse, CAA, 223, 556, Ruger SW, and most standard after market shot gun and rifle 4 or 6 position collapsible stocks.

Machined notches for staked latch plates

Mil-Spec to fit all standard applications

Easy to install with no drilling or tapping required

Industrial Grade Steel

Heat Treated

Solid Machined Construction

Black Oxide Finish

Tightens Down Your BufferTube/End Plate To Hold Your Stock Assembly In Place

Color: Black

Size: Diameter: 3.5cm, height: 0.9cm 

Package includes:1x Nut Lock 

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