$259.99
1 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Nowlin has built its name on precision 1911 barrels, and this 45 ACP pre-fit match grade barrel is a great example of what earns that reputation. Cut to 4.25 inches for Commander-length slides, it's turned from 416R stainless bar stock and hardened to 40 Rockwell C, then finished with Nowlin's electrochemically machined (ECM) rifling. That process gives you an ultra-smooth 8 RMS bore that air gauges to less than two ten-thousandths of an inch variance end to end. In their test fixture, barrels like this print under half an inch at 25 yards, which tells you what the steel is capable of once you've got a good load worked up.
The non-ramped design is meant for conventional 1911s with a standard GI-style frame ramp, so it fits most factory non-bridge-cut guns without cutting the frame. Nowlin pre-fits the hood, bottom feet, chamber, and top lugs to close accuracy-improving tolerances, and the locking lugs are pre-cut so the firing pin strikes the primer dead center. That attention to lug engagement is a big part of why these barrels lock up so consistently.
Because this ships as a complete pre-fit kit, most of the hard work is already done at the shop. On the majority of guns the kit essentially drops in, though a little fitting of the bushing outer diameter to your slide's inner diameter may be needed on some pistols. If you're the type who likes to squeeze every bit of accuracy out of a 1911 project, this is one of the cleaner upgrades you can make without sending the gun off to a smith.
Nowlin barrels are known for serious longevity too. It's not unusual to hear of their 45 ACP barrels running well past 200,000 rounds and still shooting tight, which makes this a barrel you build once and forget about.
The non-ramped design fits most factory standard non-bridge-cut 1911s with a GI-style frame ramp, and on the majority of guns the kit essentially drops in. That said, some pistols need minor fitting of the bushing outer diameter to the slide inner diameter. If your gun has been heavily customized or uses a ramped frame, this non-ramped version won't be the right match.
This non-ramped barrel works with a conventional 1911 that has a standard integral frame ramp, so no frame machining is required. The ramped version has the feed ramp built into the barrel itself and requires the frame to be cut to accept it. For most standard 45 ACP 1911s, the non-ramped barrel is the straightforward choice.
Since the hood, feet, chamber, and top lugs come pre-fit, most builders can install this with basic 1911 hand tools. If your slide needs the bushing fitted, a bushing file or light stoning is usually all it takes. Anyone comfortable with a standard 1911 barrel swap should be able to handle it.
Nowlin's ECM rifling produces an 8 RMS bore that air gauges to under .0002 inch variance, and their test barrels print less than half an inch at 25 yards. On the durability side, these 45 ACP barrels are known for extremely long service life, with reports of well over 200,000 rounds still shooting strong. Real-world accuracy will depend on your slide fit, load, and how well the barrel locks up in your gun.
| UPC | 085382406350 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SB45-4PF |
| Barrel Length | 4.25'' |
| Model | |
| Style | Non-Ramp |
You must be logged in to post a review.
Reviews
There are no reviews yet.