# Rock Island Ultra FS .45 ACP Semi-Auto Pistol - Parkerized Precision

**Brand:** Rock Island Armory
**Category:** Full Size Handguns
**Caliber:** .45 ACP

## Specifications

- **Caliber:** .45 ACP
- **Barrel Length:** 5"
- **Capacity:** 8 rounds
- **Finish:** Parkerized
- **Weight:** 39.84 oz
- **Overall Length:** 8"
- **UPC:** 4806015514862
- **SKU:** UD1MbypJny

## Description

The Rock Island Armory Ultra FS is a .45 ACP semi-automatic pistol built on a steel 1911 frame with a parkerized finish. It ships with G10 grips and an adjustable rear sight.

### Key Specifications
- **Brand:** Rock Island Armory
- **Model:** Ultra FS
- **Caliber:** .45 ACP
- **Capacity:** 8 rounds
- **Barrel Length:** 5 inches / 127 mm
- **Overall Length:** 8.75 inches / 222 mm
- **Width:** 1.3125 inches / 33 mm
- **Height:** 5.5 inches / 140 mm
- **Weight:** 2.49 lbs / approximately 40 oz
- **Action Type:** Semi-Automatic
- **Frame Material/Finish:** Steel, Parkerized
- **Sights:** Dovetail Fiber Optic Front, LPA MPS1-Type Adjustable Rear
- **Trigger Pull Weight:** 4-6 lbs

### Detailed Features
The five-inch button-rifled barrel with six grooves gives consistent performance at range distances. The parkerized steel frame resists corrosion without looking flashy. G10 grips keep the gun from shifting under recoil and hold up in wet conditions. The fiber optic front sight picks up light quickly, and the LPA MPS1-type adjustable rear lets you dial in your zero.

At 2.49 lbs this is a full-size, all-steel pistol. It is heavier than polymer-frame guns, which keeps muzzle flip moderate with .45 ACP.

### Usage
The Ultra FS fits well in IPSC or IDPA classes where the 1911 platform is allowed, and the adjustable sights help dial in competition zeros. For home defense the .45 ACP caliber and single-action trigger provide a straightforward manual of arms. At the range the manageable recoil and comfortable grip make longer sessions practical.

## Frequently Asked Questions

**Q: What caliber is the Rock Ultra FS?**

A: The Rock Ultra FS is chambered in .45 ACP.

**Q: Who makes the Rock Ultra FS?**

A: It is made by Rock Island Armory.

**Q: What is the barrel length of the Rock Ultra FS?**

A: The Rock Ultra FS has a 5-inch barrel.

**Q: How many rounds does the Rock Ultra FS hold?**

A: It has an 8-round capacity.

**Q: What type of firearm is the Rock Ultra FS?**

A: It is a full-size semi-automatic pistol built on the steel 1911 frame with a parkerized finish.

**Q: What sights does the Rock Ultra FS have?**

A: It has a dovetail fiber optic front sight and an LPA MPS1-type adjustable rear sight.

**Q: Where can I buy the Rock Ultra FS?**

A: Compare current vendor offers on this page.

## What Customers Say

*AI-generated insights from customer reviews*

Most owners of the Rock Island Ultra FS in .45 ACP come away satisfied, though a few recurring critiques are worth noting.

On the positive side, build quality gets consistent praise. The parkerized finish holds up to regular use, and the pistol feels solid in hand. Trigger feel is a frequent high point. Owners describe it as smooth and with a clean break, which helps with accurate shots. The weight, while substantial for a carry gun, is seen as an asset at the range since it absorbs recoil well.

On the negative side, some owners mention a break-in period during the first few hundred rounds where feeding isn't fully reliable. Magazine compatibility can also be an issue. Certain aftermarket magazines work better than others. A handful of users point out that the feature set is basic compared to modern striker-fired pistols, which is expected for a traditional 1911 at this price point.

Overall the consensus is that it punches above its price for a steel-frame .45 ACP 1911 and is a reasonable first 1911 purchase.

## Pricing

**11 offers available**

| Vendor | Price |
|--------|-------|
| Shootingsurplus Com | $483.36 |
| Centerfiresystems Com | $487.99 |
| Grabagun Com | $489.99 |
| Buds Gun Shop | $507.99 |
| Impactguns Com | $512.49 |
| Deguns | $522.99 |
| Selwayarmory Com | $524.99 |
| Palmettostatearmory Com | $526.99 |
| Gritrsports Com | $538.99 |
| Gunbuyer Com | $546.82 |

*...and 1 more offers*

## Similar Products

- [Rock Island Pro Match Ultra .45 ACP - 8 Rd Parkerized Pistol](https://gunsnation.com/p/rock-island-pro-match-ultra-45-acp-8-rd-parkerized-pistol/UD1MbypJfb)
- [Rock Ultra MS .45 ACP - Parkerized Ambidextrous Pistol](https://gunsnation.com/p/rock-ultra-ms-45-acp-parkerized-ambidextrous-pistol/UD1MbypJoF)
- [Rock Island Ultra FS 10mm 1911 - Parkerized Precision Pistol](https://gunsnation.com/p/rock-island-ultra-fs-10mm-1911-parkerized-precision-pistol/UD1MbypL7P)
- [Rock Island Armory Ultra FS 9mm Pistol - Parkerized Finish](https://gunsnation.com/p/rock-island-armory-ultra-fs-9mm-pistol-parkerized-finish/UD1MbypKA3)
- [Rock Island Ultra FSHC: 10mm Black Parkerized Precision Pistol](https://gunsnation.com/p/rock-island-ultra-fshc-10mm-black-parkerized-precision-pistol/UD1MbypLAK)
- [Rock Island Ultra FS .40 S&W - Precision & Power Pistol](https://gunsnation.com/p/rock-island-ultra-fs-40-s-w-precision-power-pistol/UD1MbypKPX)

---
*Data from [GunsNation](https://gunsnation.com)*