Handgun Barrels

Pistol barrels and barrels for your handgun.

Faxon Firearms Sig Sauer P320 Compact Flamed Barrel - Threaded

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Faxon Firearms Flamed Threaded Barrel For Glock 19

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Shadow Systems MR920/XR920 9mm Barrel & Comp Assembly - Black

4.0 star rating 1 Review

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$398.00
Four Payments of $99.50 with . Learn More

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L2D Combat Precision Match Fluted Barrel for Glock 34 Gen 3/4

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L2D Combat Precision Match Fluted Threaded Barrel For Glock 17 Gen 5

5.0 star rating 2 Reviews

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Lone Wolf Dusk 19 9MM Threaded Barrel for Glock 19 - Black

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$159.95
Four Payments of $39.99 with . Learn More

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Agency Arms Premier Line Fluted Barrel For Glock 19

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Agency Arms Sig P320 Compact Premier Line Threaded Barrel - SS

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$310.00
Starting at 0% APR or $57.22/mo with . Learn More

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Tyrant Designs Threaded Barrel For Glock 19

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Killer Innovations Velocity Threaded Barrel for Glock 17 GEN 5

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Killer Innovations Velocity Non-Threaded Barrel for Glock 17 GEN 5

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Agency Arms Sig P320 Compact Mid Line Threaded Barrel

5.0 star rating 4 Reviews

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Killer Innovations Sig P320 X-Carry Velocity Non-Threaded Barrel

5.0 star rating 3 Reviews

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Faxon Firearms Match Series 9mm Barrel for Glock 43

5.0 star rating 2 Reviews

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Danger Close Armament DCA-320 Select Match 9mm Barrel For Sig P320 - (3.9")

5.0 star rating 1 Review

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Faxon Firearms Match Series Sig Sauer P365 9mm Barrel

5.0 star rating 1 Review

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07/13/25

Sean R.

07/12/25

Love it, perfect quality, looks

Love it, perfect quality, looks awesome!

On Norsso Reptile XP RMR Slide For Glock 19 Gen 5 - Black DLC

Adam U.

07/11/25

Defective JMAC Threaded Mount – Manufacturing Flaw on First Thread

I recently purchased a brand-new JMAC mount from Rainier Arms and ran into a serious issue straight out of the package. When attempting to thread my Resilient RS9 suppressor onto the mount, I immediately noticed significant resistance. My first concern was potential cross-threading or an incorrect thread spec, but after double-checking compatibili...Read More

ty and verifying that the threads were properly aligned, the problem persisted.

Upon closer inspection with a pick, I discovered that the resistance was coming from the very first thread. There's a small but clearly visible dent or deformity in that area—deep enough that even after a careful attempt to smooth it out, the defect remains. This is not a burr or damage from improper handling; the mount was installed using proper tools, and the threads were never touched until I attempted to mount the suppressor.

Frankly, I’m extremely disappointed. For a premium product at this price point, JMAC’s quality control should be far better. This kind of defect should never make it out the door.

I’ve reached out to JMAC directly and hope they will stand behind their product and provide a timely resolution—ideally a replacement. I doubt Rainier Arms will assist, as they're just the dealer, but I expect JMAC to take responsibility. Read Less

On JMAC Customs 360HD 1/2-28 FaceMount HUB

Justin S.

07/09/25

UN Finally does something right

Super nice format and layout, great products, good info!

On UN12 Magazine - Issue 18

Steven R.

Loose mag fit on 5. 7 builds

If you build a 5. 7 be prepared for a VERY loose fitting magazine. I cured that with a cut off brass machine screw I threaded into a drilled and tapped hole in the front edge of the mag. Now she's tight. RANIER had the best price and picked up the ball when USPS lost my package (again, bastards), Someone will own a fine custom gun soon. Wish I cou...Read More

ld post pics. Read Less

On Sharps Bros Hellbreaker AR-15 Lower Receiver - Gen 2

Beau W.

A Functional Flash Suppressor

You can't even see a flash from the shooter's perspective firing at dusk through a . 357 lever gun. , and it's a rosebud to anyone else. I like it a lot.

On Next Level Armament 9mm Hi-Helix Flash Hider

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