HomeAR PartsTimber Creek OutdoorsTCO Lower PartsTCO Castle Nut TCO Castle Nut $6.39 Purchase this product now and earn 6 Headshots! TCO Castle Nut quantity Add to Gun Case Compare Add to Wishlist SKU: TC CN Categories: AR Parts, TCO Lower Parts, Timber Creek Outdoors Tag: Castle Nut Brand: Timber Creek OutdoorsProduct ID: 8407 Download Catalog Description Additional information Product Enquiry Description ****Weapon parts are not eligible for international shipping**** TCO Steel Castle Nut is a Mil-Spec castle nut for use with AR-15 carbine receiver extensions. Proudly made in the U.S.A. Additional information Weight 1 lbs Dimensions 4 × 3 × 2 in Product Enquiry Name Email address Enquiry Related products Out of stock Buffer Tube, Carbon Fiber, Receiver ExtensionCarbon Fiber Buffer Tube (Receiver Extension) $120.00 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare Muzzle Device6.5 Heart Breaker Muzzle Brake $55.99 Quick View Compare Compare Build kitsTimber Creek Outdoors AR Enforcer Kit (White) $599.99 Quick View Compare Compare AR Takedown PinsAR Takedown Pins Sets $15.99 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare