CU-MNDRL-G3 | Copper Receiver Welding Mandrel

Fits HK G3 | HK51 | HK91 | HK21 Receivers

Introducing the CU-MNDRL-G3 | Copper Receiver Welding Mandrel. Designed to provide HK Factory-Level precision seam alignment and welding of your HK G3 Series Receiver. 

One of the biggest challenges in welding the receiver's thin metal is managing heat build-up. The CU-MNDRL features a full-length Copper (Cu) Alloy Welding Mandrel that acts as a robust heat sink. Significantly reduces heat build-up at the junction seams and trunnion area. Minimizing the risk of burn-through holes, shrinkage and heat distortion.

Why Choose The CU-MNDRL-G3?

Perfect Weld Seams - Every Time

The CU-MNDRL offers a full-length copper mandrel that brings together every weld seam on your HK Receiver flawlessly. No more uneven or ugly welds on your Receiver's seams.

Prevents Burn-Through Holes & Heat Distortion

The CU-MNDRL's full-length Copper Receiver Welding Mandrel prevents over-penetration and burn-through. Protecting your HK Receiver and ensuring it remains intact throughout the welding process.

The CU-MNDRL significantly reduces the heat build-up during the receiver welding process which typically causes shrinkage and distortion.

Beautiful Welds, Inside and Out

The CU-MNDRL ensures your receiver seams are not only beautifully welded on the outside but also have minimal over-penetration on the inside of your receiver. This results in stronger, cleaner and more aesthetically pleasing welds. 

Lack of over-penetration means eliminating the tedious task of grinding down weld seam bleed-through on the inside of your receiver.

Built To Last

Built from solid high-grade Copper (Cu) Alloy and clear PVD coated, the CU-MNDRL is built to last. The use of premium materials and finishes ensures that your tool withstands the rigors of frequent use, offering you long-lasting durability.

Get Your CU-MNDRL-G3 Today!

Why settle for anything less than perfectly aligned and beautifully welded HK Receiver seams? Protect your HK G3 Series Receiver from heat distortion and ugly burn-through holes.

See the CU-MNDRL in Action!

To truly appreciate the effectiveness and ease of use of the CU-MNDRL | Copper Receiver Welding Mandrel, Click here to watch our demonstration videos.

Achieve HK Factory-Level welds with the CU-MNDRL-G3 - because precision matters.