Primary Weapons Systems Ratchet Lock Castle Nut & End Plate Set AR Tubes RLCN-KIT

Product Description The Primary Weapons Systems Ratchet Lock Castle Nut & End Plate Set provides a fast, secure upgrade for AR-platform rifles. Its ratchet-lock design eliminates the need for staking while delivering a rock-solid lockup. Compatible with both Mil-Spec and commercial buffer tubes, the end plate includes an integrated quick‑detach (QD) sling mount. Built from durable 4140 steel, this kit installs easily and can be removed without hassle—ideal for new builds or refreshing existing carbines. Designed to pair with PWS’s Enhanced Buffer Tube Mod 2 and suitable for AR-15 and AR-308 applications.

Product Highlights

• Ratcheting castle nut design eliminates staking for easier assembly
• Works with Mil-Spec and commercial buffer tubes on AR platforms
• Integrated QD sling swivel mount on end plate for flexible carry options
• Robust 4140 steel construction for long-term durability
• Quick, straightforward installation with easy removal when needed

Specs

• Product Type: Castle Nut & End Plate Set
• Material: 4140 steel
• Color: Black
• Compatibility: AR-15 and AR-308 platforms; Mil-Spec & Commercial buffer tubes
• Designed For: PWS Enhanced Buffer Tube Mod 2 (also compatible with standard tubes)
• Integrated Mount: QD sling slot on end plate
• Weight: approx. 0.2 lb
• UPC: 811154033673
• Manufacturer Part Number: RLCN-KIT
• Brand: Primary Weapons Systems