Sig Sauer 1911 X-Series .45 ACP 5″ Optic-Ready
- Firearms ship to the FFL dealer you choose, in any state
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- 30-day returns on unused parts and accessories
Specs at a glance
About this product
The Sig Sauer 1911 X-Series .45 ACP 5" Optic-Ready is a modern take on the classic 1911 platform, designed for shooters who want the stopping power of .45 ACP with the speed of a red dot. This full-size pistol pairs a stainless-steel frame and slide with XRAY3 day/night sights and an optic-ready slide footprint, so you can mount your favorite dot without milling. It’s single-action-only, ships with two 8-round steel magazines, and includes an extended ambidextrous manual safety. Price: $1,399.99.
| Manufacturer | Sig Sauer |
|---|---|
| Model | 1911 X-Series |
| Material | Stainless steel frame and slide |
| Compatibility | Red dot optics (optic-ready slide footprint) |
| Finish | Stainless steel |
| Weight | 40.5 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Optic-Ready Slide — WHY IT MATTERS: You can mount a red dot directly to the slide without sending it to a gunsmith, saving you time and money while improving target acquisition speed.
- XRAY3 Day/Night Sights — WHY IT MATTERS: These tritium-and-fiber sights give you a bright, clear sight picture in any light, so you’re always on target whether at the range or in low-light conditions.
- Extended Ambidextrous Safety — WHY IT MATTERS: Left-handed shooters can engage the safety just as fast as right-handed shooters, and the extended lever makes sweeping it off easier under stress.
- Two 8-Round Steel Magazines — WHY IT MATTERS: You get two flush-fit, reliable magazines right out of the box, so you can load up and hit the range without buying extras.
- 5.0" Stainless Steel Barrel — WHY IT MATTERS: The longer barrel gives you better velocity and accuracy with .45 ACP, and the stainless construction resists corrosion for years of service.
Who It’s For
This pistol is built for shooters who want a classic 1911 with modern upgrades. It’s ideal for target shooters who want to add a red dot, home defenders who value the .45 ACP round, and collectors who appreciate Sig’s take on the platform. New gun owners will find the single-action trigger easy to learn, and the ambi safety makes it friendly for lefties.
Pros & Cons
Pros: Optic-ready from the factory, excellent XRAY3 sights, reliable stainless construction, two magazines included, ambidextrous safety.
Cons: The stainless finish shows holster wear faster than a matte coating, and the 8-round capacity is standard for 1911s but lower than modern double-stack 9mm options.
Comparison
| Feature | Sig Sauer 1911 X-Series | Zev Technologies OZ9 | Agency Arms Premier |
|---|---|---|---|
| Caliber | .45 ACP | 9mm | 9mm |
| Barrel Length | 5.0" | 4.5" | 5.0" |
| Capacity | 8 rounds | 17 rounds | 17 rounds |
| Optic Ready | Yes | Yes | Yes (cut) |
| Price | $1,399.99 | $1,899.99 | $2,499.99 |
| Action | Single-action only | Striker-fired | Striker-fired |
FAQ
What optics fit the Sig Sauer 1911 X-Series slide?
The optic-ready slide uses the P-Series footprint, which is compatible with most popular red dots like the Romeo1Pro, DeltaPoint Pro, and RMR with an adapter plate. Per Sig Sauer specs, the slide is pre-cut for the Romeo1Pro footprint.
Does this pistol come with a red dot?
No, the X-Series ships with XRAY3 iron sights only. The slide is cut for optics, but you’ll need to buy your own red dot and mount it.
Is the safety ambidextrous?
Yes, it has an extended ambidextrous manual safety, so left-handed shooters can operate it easily.
What magazines does this use?
It ships with two 8-round steel magazines. These are standard 1911 magazines, so you can use any quality 1911 .45 ACP mags as spares.
Is this a good first 1911?
Yes. The single-action trigger is crisp and predictable, the safety is easy to use, and the optic-ready slide gives you room to grow. Just be aware that .45 ACP has more recoil than 9mm.
What’s in the Box
- Sig Sauer 1911 X-Series pistol
- Two 8-round steel magazines
- Cable lock
- Owner’s manual
✔ Nationwide delivery (all 50 states)
✔ Ships 1-2 business days
✔ 30-day returns
✔ Secure checkout
Last updated: April 2026
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