Strike AR Castle Nut

The Strike AR  Castle Nut is machined from AISI 4140 steel and surface heat-treated to  45-50 HRC for robustness and durability. Its manganese phosphate finish  provides an attractive matte black appearance and excellent resistance  to corrosion and wear. When paired with the Strike Industries  Multi-Function End Plate, there's no need for peening or staking,  simplifying installation.

Additionally, the nut features wrench cutouts for easy installation  with a castle nut wrench, and its Mil-Spec dimensions ensure  compatibility with AR-15 and AR-10 receiver extensions/buffer tubes.  Start your new build or enhance a current rifle setup with the Strike AR  Castle Nut so the receiver extension/buffer tube stays in place during  operation.

COMPATIBILITY: AR-15 and AR-10 Mil-Spec dimension receiver extension/buffer tube

Product Features: 
-No peening or staking needed when paired with SI Multi-Function End Plate
-Heat-treated surface to 45-50 HRC
-Manganese phosphate finish
-Machined from AISI 4140 steel
-Castle nut wrench cutouts for installation
-Mil-Spec dimensions for AR-15/AR-10 receiver extensions/buffer tubesProduct Specs: 
Width: 34.92mm
Height: 10.5mm