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If you own a Glock 17L and want to run a can, the factory barrel just won't cut it. SilencerCo's AC861 solves that with a 6.5-inch threaded replacement barrel machined from heat-treated 416R stainless steel and finished in black nitride. That finish adds real surface hardness and corrosion resistance, so the barrel shrugs off the wear that comes with regular range time and suppressed shooting. The 1/2×28 right-hand threads are the standard for 9mm pistol cans, giving you plenty of options when it comes time to mount a suppressor or muzzle device.
SilencerCo built its name on suppressors, so it stands to reason they hold their barrels to the same standard. Concentric, precisely cut threads matter a lot here, since sloppy threading is a fast track to a baffle strike and a ruined can. This barrel is built to keep your suppressor aligned round after round. The generous 6.5-inch length also stretches out the sight radius on an already long-slide platform, which is a nice bonus for accuracy and helps keep muzzle rise in check.
This is a drop-in barrel designed for the Glock 17L in Gen 1 through Gen 4 slides. No gunsmithing required for most builds, though as with any aftermarket barrel it's smart to check fit and function before heading to the range. A thread protector comes installed to keep the threads clean and safe when you're running the pistol without a suppressor attached.
One thing worth knowing up front: a piston is not included. If you're pairing this with a tri-lug or direct-thread pistol suppressor that requires a booster, you'll want to grab the correct piston separately. Between the stainless build, the nitride coating, and SilencerCo's reputation for quality threads, this is a straightforward way to get your 17L quiet-ready.
This barrel is made for the Glock 17L in Gen 1 through Gen 4 slides. It's a drop-in replacement, so most builds won't need any gunsmithing. As always, confirm fit and function before live fire.
No, a piston is not included with this barrel. It does ship with a thread protector installed to guard the threads when you're not running a suppressor. If your pistol can requires a booster or piston, you'll need to purchase the correct one separately.
The 1/2×28 right-hand thread pitch is the most common standard for 9mm pistol suppressors, so your options are wide open. Direct-thread and tri-lug 9mm cans that use this pitch will mount up. Just match your suppressor's mounting system to the right piston or adapter.
The 416R stainless steel gives the barrel strength and consistent accuracy over a long service life. The black nitride finish boosts surface hardness and corrosion resistance, which helps it hold up to the extra fouling and heat that come with suppressed shooting.
| UPC | 817272012033 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AC861 |
| Barrel Length | 6.5'' |
| Caliber/Gauge | 9mm |
| Color | Black |
| Length | 6.50" |
| Model | |
| Package Height | 1.5 |
| Package Width | 1.2 |
| Product Type | Accessory-Barrels |
| Shipping Weight | 0.413 |
| Style | Threaded |
| Thread Pattern | 1/2"x28 |
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