+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Stern Defense SD AR15 Barrel Up to 62% Off Blazin' Deal w/ Free Shipping — 10 models

Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2
Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2
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 .45acp, 16.1in, Black, ACPBRLINCHD2
1 of 29 images
Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2
Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2
2 of 29 images
Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
3 of 29 images
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
4 of 29 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
5 of 29 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
6 of 29 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
7 of 29 images
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
8 of 29 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
9 of 29 images
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
10 of 29 images
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
11 of 29 images
Stern Defense SD AR15 Barrel .45acp, 8.5in, Black, ACPBRL85INCHDA
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
12 of 29 images
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
13 of 29 images
Stern Defense SD AR15 Barrel .45acp, 10.5in, Black, ACPBRL05INCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
14 of 29 images
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
15 of 29 images
Stern Defense SD AR15 Barrel 9mm, 4in, Black, BRLINCHD
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
16 of 29 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
17 of 29 images
Stern Defense SD AR15 Barrel .45acp, 4in, Black, ACPBRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
18 of 29 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
19 of 29 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
20 of 29 images
Stern Defense SD AR15 Barrel 9mm, 6in, Black, BRLINCHD1
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
21 of 29 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
22 of 29 images
Stern Defense SD AR15 Barrel 9mm, 8,5in, Black, BRL85INCHDA
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
23 of 29 images
Stern Defense SD AR15 Barrel 9mm, 10,5in, Black, BRL05INCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
24 of 29 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
25 of 29 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
26 of 29 images
Stern Defense SD AR15 Barrel .45acp, 6in, Black, ACPBRLINCHDA
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
27 of 29 images
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
28 of 29 images
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2
29 of 29 images
Stern Defense SD AR15 Barrel 9mm, 16,1in, Black, BRLINCHD2

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
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 No feedramp on 9mm barrel! by Larry, Verified Owner, January 27, 2021
I bought a 9mm 16" barrel and it came with no feed ramp whatsoever! I was able to cut a feed ramp and use the barrel, as I'm a gunsmith and had another barrel on hand to go by when cutting a ramp. Someone who is not proficient in gunsmithing would no...
Read More...
5/18 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
Blazin' Deal
10% Instant Savings

We've got an AWESOME deal for you!

See more Blazin' Deal items
Blazin' Deal
Prices have been cut drastically on select models of this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts - sorry about that. This offer won't last long, so don't miss out!
Show In Stock Only
10 Models Available

Show with deals only:

Blazin' Deal
Instant Savings
Caliber
All
Barrel Length
All
Barrel Twist Rate
All
Additional Features
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $132.73
You Save Up to 53%
Receive $2.74 OP Bucks

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

Stern Defense SD AR15 Barrel Orderable Models

List of Orderable Models

Stern Defense SD AR15 Barrel .45acp, 16.1in, Black, ACPBRLINCHD2 , MPN: 006-45ACP BARREL16.1INCH-D1-M , UPC: 850001176354 , Code: 3JS-ATB-SDRBSDAR15B-ACPBRLINCHD2
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, 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 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, 8,5in, Black, BRL85INCHDA , MPN: 006-9MM BARREL 8.5INCH-D1-M , UPC: 850001176316 , Code: 3JS-ATB-SDRBSDAR15B-BRL85INCHD
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
Compare (0)
1 item has been added
Add at least two items to compare