Radian Weapons R0878 Backstrap Gray Alumn

The Radian Weapons R0878 is a gray aluminum backstrap designed to upgrade the ergonomics of your Sig Sauer P365 XMACRO. If you carry a P365 XMACRO for self-defense or everyday duty, this backstrap transforms how the gun feels in your hand—offering a higher palm swell, deeper grip channels, and improved hand contact that translates directly to better control and faster follow-up shots. Radian engineered this piece to work in concert with their matching magwell, creating a cohesive grip solution that doesn't compromise concealed carry comfort.

The design philosophy is straightforward: maximize surface area where it matters and eliminate sharp edges where they don't. Deep, aggressive channels on the backstrap lock your hand in a repeatable grip position, while the palm swell promotes a higher grip that many shooters prefer for recoil management and speed. The aluminum construction keeps weight minimal. Installation uses Radian's patent-pending screwless design—a spring-loaded dovetail interface that locks the backstrap in place without traditional fasteners, meaning no tools and no fiddling once you've got it seated.

The gray anodized finish is durable and low-profile, blending with most slide colors without adding visual bulk to your setup. This is a quality piece from a builder known for thoughtful, functional upgrades rather than gimmicks. If you've found the stock P365 XMACRO grip too small or the palm swell too pronounced, or if you simply want a sharper, more secure grip platform, the R0878 addresses those pain points with minimal fuss.

Key Features

• Gray aluminum construction—lightweight and durable
• Deep, aggressive grip channels for maximum hand contact
• Enhanced palm swell for repeatable grip and improved recoil control
• Patent-pending screwless installation with spring-loaded dovetail retention
• Designed specifically for Sig Sauer P365 XMACRO compatibility

Specifications

Frequently Asked Questions

Will this backstrap work with my Sig P365 XMACRO?

Yes. The R0878 is engineered specifically for the P365 XMACRO platform and is compatible with all OEM XMACRO magazine base pads.

How does it install?

The R0878 uses a screwless design. It locks into place via a precision machined dovetail interface with a spring-loaded retention stud—no tools or disassembly required.

Does it add bulk or printing when carrying concealed?

The backstrap is designed with concealed carry in mind. When paired with the matching magwell, the rear surface is heavily rounded to minimize printing and reduce hot spots against your body.

What's the difference between this backstrap and the stock P365 XMACRO grip?

The R0878 features deeper, more aggressive grip channels and an enhanced palm swell compared to factory geometry. These changes promote a higher, more secure hand position and better surface contact, which many shooters find improves control and speed.