Radian Weapons Ultralight AR15 QD Endplate Black Finish R0078 UPC 817093020774
Product Description
The Radian Weapons Ultralight AR15 QD Endplate in Black (MPN: R0078) is a premium, lightweight receiver sling attachment component designed to optimize sling mounting ergonomics on tactical carbines and modern sporting rifles. Purpose-built to provide a central, low-profile quick-detach (QD) sling swivel mounting point at the rear of the lower receiver, this endplate delivers 360-degree rotation management without adding unneeded weight or bulk to your receiver receiver assembly.
Precision CNC-machined in the USA from ultra-durable 7075-T6 aluminum, the Ultralight QD Endplate weighs significantly less than traditional stamped steel factory endplates while boasting exceptional tensile strength. Treated with a MIL-A-8625 Type III hardcoat anodized black finish, it features a titanium rotation-limited QD socket sleeve pressed into the aluminum housing to eliminate wear and galling caused by steel QD sling swivel bearings over time.
Engineered for seamless fitment on all Mil-Spec AR-15 and AR-10/SR25 lower receivers, the R0078 endplate replaces standard receiver endplates without requiring permanent weapon modifications. Its rotation-limited socket design prevents sling twisting and tangles during dynamic transitions, making it an essential performance upgrade for duty carbines, home defense builds, and lightweight competition platforms.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits standard Mil-Spec AR-15 and AR-10/LR-308 lower receivers. Accepts all standard push-button Quick Detach (QD) sling swivels. (Note: Aluminum endplates require proper torque and anti-rotation alignment during castle nut installation; avoid over-peening or aggressive staking directly against aluminum edges).
- Perform a complete firearm safety check: drop the magazine, lock the action open, and visually/physically inspect the chamber to verify zero live rounds are present.
- Field strip the upper receiver assembly from the lower receiver.
- Use an armorer's castle nut wrench to loosen the receiver castle nut, sliding the castle nut and factory endplate rearward off the receiver extension (buffer tube).
- Carefully capture the rear takedown pin spring and detent as the old endplate slides back.
- Slide the Radian Ultralight QD Endplate onto the buffer tube, aligning its indexing tab into the lower receiver channel while compressing the takedown detent and spring flush.
- Hand-tighten the castle nut forward against the endplate, verify straight vertical alignment, and torque the castle nut to 38–40 ft-lbs before staking.
Key Features
- CNC-Machined 7075-T6 Aluminum Construction: Delivers superior structural integrity while drastically reducing rear receiver weight compared to steel endplates.
- Titanium QD Socket Sleeve: Reinforced titanium socket insert prevents wear, corrosion, and slop from heavy steel QD swivel rotation.
- Rotation-Limited QD Swivel Mount: Integrated rotation stops keep sling webbings from binding, twisting, or tangling during transitions.
- MIL-A-8625 Type III Hardcoat Anodized Finish: Non-reflective matte black finish provides chemical, abrasion, and corrosion protection.
- Universal AR-15 / AR-10 Fitment: Standard receiver dimensions allow direct drop-in replacement on all Mil-Spec receiver extensions.
- Made in the USA: Built by Radian Weapons to exacting tolerances for hard-use tactical applications.
Product Specifications
- Brand: Radian Weapons
- Model/Series: Ultralight QD Receiver Endplate
- MPN / SKU: R0078
- UPC: 817093020774
- Platform Compatibility: AR-15 / AR-10 / M4 / LR-308 (Mil-Spec Extensions)
- Material: 7075-T6 Billet Aluminum w/ Titanium Insert
- Finish / Color: Type III Hardcoat Anodized Black
- Sling Interface: Push-Button Quick Detach (QD) Socket
- Socket Feature: Rotation-Limited
- Weight: 0.28 oz
- Country of Origin: USA
