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Radian Weapons Backstrap and Magwell, Fits Sig P365 X-Macro, Bronze
$189.99 $159.95 Save 16%
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Most Helpful Positive Review Great product!!
The quality that you get from anything Radian speaks for itself. This is a game changer when combined with the Tru17 base plates and the ramjet.
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Radian Backstrap/Magwell

by BigDawg33, Verified Owner from CA, United States Written on September 21, 2025
This Backstrap/magwell fits like a glove. It slides on super easy and adds the right amount of grip and sizing your looking for. The original backstrap the comes with the sig doesn’t really have to much difference in sizing but this does it
Pros:
  • Badass
  • easy to install
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Looks and fits great

by Rocky, Verified Owner from MO, United States Written on September 17, 2025
I’ve wanted one of these backstrap/mag wells for a while. I found it at OP at a good price.
Would recommend: Yes
Was it helpful to you? Yes | No

Two tone Xmacro

by Shooter McGavin, Verified Owner from NV, United States Written on September 16, 2025
I already had the bronze barrel on my Radian comp along with a black Radian magwell/backstrap on another pistol. Swithched things around after picking this up making one Xmacro a full Radian two tone and my other Xmacro peanut butter another two-tone with the black backstrap/magwell. This backstrap fits my hand perfectly and allows my grid to be much better than the stock grips.
Would recommend: Yes
Was it helpful to you? Yes | No

Stylish and bold works well highly recommend

by Scott Belle, Verified Owner from TX, United States Written on September 13, 2025
The back strap and bagel add flare and style . Reloads are easy as well .
Would recommend: Yes
Was it helpful to you? Yes | No

Rad grip upgrade

by JT, Verified Owner from TX, United States Written on September 2, 2025
This grip feels good in the hand. It also looks nice which is a plus. It fits perfectly and easy to install
Would recommend: Yes
Was it helpful to you? Yes | No

great fit and feel

by Patrick Brady, Verified Owner from NC, United States Written on August 27, 2025
This is my second Radian Back-strap and Magwell combo. Install is incredibly easy and ingenious. The way the Magwell interfaces with back-strap is very solid and feels great in the hand. The little bit of extra weight aids in the ability for the firearm to stay on target. Radian does a great job of maintaining tolerance and building a quality product.
Pros:
  • Durability
  • Fit and finish
  • Aesthetics
Cons:
  • price
Would recommend: Yes
Was it helpful to you? Yes | No

Great fit great look

by Scott Belle, Verified Owner from TX, United States Written on July 22, 2025
The Radium Back strap is a looker, give the P 365 X Macro a personality
Would recommend: Yes
Was it helpful to you? Yes | No

Color didn't match the picture

by Jay, Verified Owner from CA, United States Written on July 20, 2025
It's well made and looks great, but the color is a bit darker than in the picture. I was expecting a much lighter bronze. I will have to wait until my Radian barrel arrives and compare the two parts to see if they even match. Hurry up and wait, I guess.
Would recommend: Yes
Was it helpful to you? Yes | No

Backstrap and Magwell for p365 x and xl

by Andrew, Verified Owner from IN, United States Written on June 14, 2025
Fitment is excellent and provides an impressive grip texture. As well as, a swelled back strap feel that feels more reminicent of a "L" back strap of an H&K or Walther fullsize grip. It fits perfectly into your palm and the heel of your palm. I fell like I have a better purchase on the firearm for repeat shots, and it is obvious in my groups. The magwell gives just enough of a pinky kick that it helps with the control of the recoil and it takes it from a good firearm to a great firearm!
Pros:
  • metal
  • Texture
  • Comfort
  • color
  • recoil control
  • Pinky ledge
Cons:
  • price
  • metal
  • mag baseplate gap
  • can only use sig xl branded grip
Best Used for:
  • Daily Carry
  • compitition, or great plinking
Would recommend: Yes
Was it helpful to you? Yes | No

Great product fits graat

by Smackem, Verified Owner from IN, United States Written on April 29, 2025
Pricy looks cool feels good in the hand shoots great
Would recommend: Yes
Was it helpful to you? Yes | No
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