Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
SIG SAUER XSeries 3.9in Slide Assemblies
$699.00 $619.99 Save 11%
View Product
Compare (0)

Stephen's Review of SIG SAUER XSeries 3.9in Slide Assemblies

I have a 1st gen Sig P320 Compact with the optional factory update. I wanted to add an optic. To have my current slide milled, refinished, install suppressor height sites and purchase a quality optic would cost more than $150 more than purchasing this slide with the optic pre-installed. Plus I have the old slide to drop on if I want to shoot without the optic. As far as the Romeo One Pro itself the buttons on mine were really stiff but they have loosed up a little. It does not come with a shroud and you do need a torque screw driver to get the battery cover tight enough so the optic doesn't turn off under recoil. I had to turn mine almost a 1/2 turn past what I was thought it should be. I am very pleased with the purchase.

I hope this helps others looking to purchase this slide.
Pros:
  • Price
  • features
  • drop in part
  • The coyote color looks great with a black grip
  • slide fully pre-assembled
Cons:
  • Battery retension is flimsy
  • buttons are stiff
  • No shroud
Best Used for:
  • Self / home defense
  • Target shooting
Would Recommend: Yes
Was it helpful to you? Yes | No
Share