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Stern Defense SD AR15 Barrel Up to 31% Off w/ Free Shipping — 9 models

Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
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Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
2 of 27 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
3 of 27 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
4 of 27 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
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Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
6 of 27 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
7 of 27 images
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
8 of 27 images
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
9 of 27 images
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
10 of 27 images
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
11 of 27 images
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
12 of 27 images
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
13 of 27 images
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
14 of 27 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
15 of 27 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
16 of 27 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
17 of 27 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
18 of 27 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
19 of 27 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
20 of 27 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
21 of 27 images
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
22 of 27 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
23 of 27 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
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Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
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Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
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Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
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Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2

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Questions & Answers
Are they come with feed ramp?

Glock magazine barrels do not have feed ramps. 90% of them produced do not have true "feed ramps". The Glock magazine AR lowers position the magazine about 5 mm from the chamber, and the magazines sit higher and more level with chamber. I'm curious to see what people actually did that say they added feed ramps. There isn't material where it would need to be. Chances are they screwed the barrel up pretty good. If you want to see true 9mm AR barrel feed ramps, look at TACCOM barrels. I have a Stern Barrel for my 9mm and only complaint is I didn't realize it wasn't a true 4"s, its 3"s by any other standard. TACCOM also makes a $20.00 part that can be added to your 9mm upper to ramp the 5mm (.200") between magazine lip and barrel. Also own a Faxon 9mm AR barrel, and a RTB/BA 9mm AR barrel, no feed ramps. I have installed TACCOM Feed ramps in one upper, but wasn't having any issues feeding with it. Had a customer that wanted one installed so ordered one for myself.

by The Bob, Verified Owner, April 4, 2022
See 2 More Answers
Is the 45 acp 4in barrel +p rated? Expert Answer

The manufacturer doesn't specifically state if these barrels are rated for +P ammo. Email us at techsales@opticsplanet.com for more information.

by Hunter, Gear Expert, January 24, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Stern Defense 16 in barrel by Ed, Verified Owner, October 20, 2024
Am building a second upper using this barrel. Fired about 20 rounds through it with no issues. Seems to feed fine. Waiting on the correct Aero handguard to arrive to finish my build. Looks to be compatible with foxtrot mikes Glock mag lowers and bcg ...
Read More...
1/1 found this helpful
Helpful Positive Review
Great fit and accurate by IanMT, October 3, 2020
Using this with a Foxtrot Mike lower, Anderson 458 upper and Stern BCG. Feeds great with the right mag and very accurate. Easily hits 8" steel with cheap dot at 100 meters. Fitment was great (Aero Atlas S) handguard.
2/2 found this helpful
Helpful Negative Review
Really?! No feed ramp. by Rever, Verified Owner, December 9, 2022
This came nicely packaged and fit was perfect into my Spartan upper. However, it will not feed anything. Come to find out, it has no feed ramp and it definitely needs one. Now I need to spend even more money at the gunsmith just to make it useable. A...
Read More...
1/1 found this helpful
Most Recent Reviews
Excellent quality great feed ramp by Ralph, Verified Owner, July 19, 2025
Excellent machining fit, and finish. Wide feed ramp that helps loading defensive ammo. Great finish and index pin for no rotation issues. accurately concentric as measured by a suppressor alignment rod.
Most Recent Reviews
Well machined with solid shoulder for suppressor mounting by Ralph, Verified Owner, July 11, 2025
A great choice for a pcc build. The indexing pin adds an extra layer of assurance of no rotation. The profile is lightweight with an ample shoulder for suppressor mounting. Mates well with a tri-lug adapter. Fits perfectly under a 4.8 handguard with ...
Read More...
Most Recent Reviews
5" 9mm barrel wrong thread pitch listed by Ralph, Verified Owner, July 10, 2025
After spending an extra 200 on a 1/2x36 tri-lug and mount, come to find out the description is wrong on the thread pitch. The 9mm barrels have standard 1/2x28. So don't mess up your barrel or muzzle device as the 1/2x36 will thread on about 2 turns a...
Read More...
Read All 9 Reviews

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Product Info for Stern Defense SD AR15 Barrel

Stern 9mm barrels are ideal for gun lovers who want to build their own custom dedicated 9mm AR15 upper group. Our barrels offer an advantage over the competition. Every stern defense barrel throat is machined deeper for a longer free bore to accommodate bullets with a longer ogive. We have found that some common defense rounds jam into the rifling before the round is fully chambered. Some of the barrels on the market do not accommodate this and will potentially result in nasty malfunctions, resulting in a round being stuck in the chamber requiring manual methods to clear the malfunction.image

Note: Barrel comes with locating pin installed.

Specifications for Stern Defense SD AR15 Barrel:

Manufacturer: Stern Defense
Color: Black
Fabric/Material: Melonite
Gun Model: AR-15
Condition: New

Features of Stern Defense SD AR15 Barrel

  • Barrel length is measured in overall length from breech to muzzle.
  • Caliber: 9mm.
  • Length: 4 Inches.
  • Threaded .5-36.
  • 1:10 TWIST.
  • 4150 Chrome-moly steel.
  • Melonite coating.

Package Contents:

  • Stern Defense SD AR15 Barrel

What firearm models does the manufacturer say Stern Defense SD AR15 Barrel is compatible with?

The manufacturer suggests that Stern Defense SD AR15 Barrel is compatible with AR-15

Stern Defense SD AR15 Barrel Orderable Models

List of Orderable Models

  • Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD , MPN: 006-9MM BARREL 4 INCH-D1-M , UPC: 850001176415 , Code: 3JS-ATB-SDRBSDAR15B-BRLINCHD
  • Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1 , MPN: 006-45ACP BARREL4INCH-D1-M , UPC: 850001176521 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD1
  • Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1 , MPN: 006-9MM BARREL 6 INCH-D1-M , UPC: 850001176286 , Code: 3JS-ATB-SDRBSDAR15B-BRLINCHD1
  • Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA , MPN: 006-9MM BARREL 8.5INCH-D1-M , UPC: 850001176316 , Code: 3JS-ATB-SDRBSDAR15B-BRL85INCHD
  • Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA , MPN: 006-9MM BARREL10.5INCH-D1-M , UPC: 850001176323 , Code: 3JS-ATB-SDRBSDAR15B-BRL05INCHD
  • Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2 , MPN: 006-9MM BARREL16.1INCH-D1-M , UPC: 850001176392 , Code: 3JS-ATB-SDRBSDAR15B-BRLINCHD2
  • Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA , MPN: 006-45ACP BARREL8.5INCH-D1-M , UPC: 850001176446 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRL85INCHD
  • Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD , MPN: 006-45ACP BARREL10.5INCH-D1-M , UPC: 850001176378 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRL05INCHD
  • Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA , MPN: 006-45ACP BARREL6INCH-D1-M , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD

Stern Defense SD AR15 Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • USED Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD, EDEMO1, Condition Fair, Other , MPN: 006-9MM BARREL 4 INCH-D1-M -EDEMO1 , Code: 3JS-ATB-SDRBSDAR15B-BRLINCHD-EDEMO-OT-D
  • DEMO, Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2 , MPN: 006-45ACP BARREL16.1INCH-D1-M-DEMO , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD2-DEMO
  • USED Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1, EDEMO1, Condition Fair, Other , MPN: 006-9MM BARREL 6 INCH-D1-M-EDEMO1 , Code: 3JS-ATB-SDRBSDAR15B-BRLINCHD1-EDEMO-OT-D
  • USED Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA, EDEMO1, Condition Fair, Other , MPN: 006-45ACP BARREL6INCH-D1-M -EDEMO1 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD-EDEMO-OT-D
  • USED Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD, EDEMO1, Condition Parts Only/Salvage, Defective , MPN: 006-45ACP BARREL10.5INCH-D1-M-EDEMO1 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRL05INCHD-EDEMO-DF-F
  • Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2 , MPN: 006-45ACP BARREL16.1INCH-D1-M , UPC: 850001176354 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD2
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