Home > PRODUCTS > Recoil Stock Kits & Weights > Mossberg 500/590 Recoil Stock Kits >

AR15/M4 Stock Buffer Tube Castle Nut
AR15/M4 Buffer Tube Castle Nut

Alternative Views:

Our Price: $7.95
Sale Price: $5.95

Availability:: IN STOCK
Product Code: AR-BTCN

AR-15/M-4 Buffer Tube Castle Nut

The M4 Castle Nut is used to secure the receiver extension, also known as the buffer tube, to the rear of an AR-15 receiver. It is also used on some stock kits for other weapons, such as shotguns, bolt actions or AKs, where AR-15 buffer tubes are being attached to receiver adapters. It is tightened using a spanner wrench, stock wrench or AR-15 armorers tool designed for this purpose. Our Castle Nuts are made to Mil-Spec standards and have 4 wrench notches used for tightening and 3 staking notches on the opposite side for staking the nut in place once the stock is assembled if desired. These castle nuts are high quality steel, made to precise standards for a tight fit on a quality buffer tube and have a mil-spec parkerized finish.

Thickness: .370", Weight: .60 ounces.
  • 4 Wrench Slots
  • 3 Staking Slots on opposite side

Related Products...
AR15/M4 Receiver End Plate
Sale Price: $3.95

AR15/M4 Receiver End Plate

Share your knowledge of this product with other customers

Browse for more products in the same category as this item:

PRODUCTS > Recoil Stock Kits & Weights > Mossberg 500/590 Recoil Stock Kits
PRODUCTS > AR Parts > Buffer Tubes
PRODUCTS > AR Parts > Lower Parts