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Stern Defense SD BU9 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver 004-SD BU9-D1-M Color: Black, Finish: Phosphate Chrome, 35% Off After Instant Savings w/ Free Shipping
This was is my first AR9 build and I wanted to use my Glock mags on it so I order the Stern Defense 9mm conversion and I paired it with the Stern Defense bolt carrier and I can’t be more pleased. Been to the range a few times to set a few things and ...
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I already had a 9mm bolt but as with most as far as the echo sport trigger the hammer slot is to naefor the hammer lock. So instead of modifying the bolt I had I decided to get the stern defense bolt, I plan on building another 9mm anyway. Stearns bo...
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1/4 found this helpful
Most Recent Reviews
Bolt is a Gem
by
MLEW,
Verified Owner,
August 1, 2025
Works flawlessly with Fostech Echo Binary Trigger! Fit and finish are excellent!
I purchased this bolt carrier and paired it with a Stern Defense MAG-AD9 AR-15 Glock 9mm/.40 Magazine Conversion Adapter. I just didn't like the Colt magazines or the Colt style conversion block. I am 100% satisfied with my purchase and would buy it ...
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I purchased this bolt carrier and paired it with a Stern Defense MAG-AD9 AR-15 Glock 9mm/.40 Magazine Conversion Adapter. I just didn't like the Colt magazines or the Colt style conversion block. I am 100% satisfied with my purchase and would buy it ...
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I m doing an ar9 build and needed a bcg for it . My friend suggested optics planet . I purchased a stem defense SD bu9 . I haven’t shot mine yet but I did try my friend’s it fired flawlessly that’s why I decided to purchase it. Seems to be high qual...
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Get a 10% savings instantly when purchasing this product before September 6th, 2025! Sales price already reflects these instant savings!
Color: Black Finish: Phosphate Chrome Caliber: 9mm Luger Gun Make: AR Platform Gun Model: AR-15 Hand: Right Additional Features: Compatible with single stage short reset triggers , Compatible with the Echo trigger. , Compatible with the JP Silent capture spring , Compatible with the Law Folding Tactical Stock , Constructed from 8620 AISI steel , Custom 4140 billet extractor providing superior ejection. Condition: New Weight: 15.5 oz
Product Info for Stern Defense SD BU9 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver
Get a factory made bolt carrier at a fraction of the cost with this one. These Bolt Carrier Groups from the experts at Stern Defense are built with Melonite coatings on 8620 AISI steel with a melonite finish to reduce friction and increase reliability. The Stern Defense Glock Pattern 9mm Bolt Carrier fits Mil-Spec and Glock-pattern upper receivers, and it's compatible with Glock magazines and standard AR15/M16 charging handles. Further, it functions with Colt SMG and Glock magazines, so you can use it with your Glock pistol. Install this bolt carrier in your Glock and Mil-Spec rifle upper receivers to get a durable and reliable bolt carrier group. Pick up this 9mm BCG for your AR or Glock firearm.
Specifications for Stern Defense SD BU9 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver:
Manufacturer:
Stern Defense
Color:
Black
Finish:
Phosphate Chrome
Fabric/Material:
Melonite
Caliber:
9mm Luger
Gun Make:
AR Platform
Gun Model:
AR-15
Hand:
Right
Additional Features:
Constructed from 8620 AISI steel, Compatible with the JP Silent capture spring, Compatible with the Echo trigger., Compatible with the Law Folding Tactical Stock, Compatible with single stage short reset triggers, Custom 4140 billet extractor providing superior ejection.
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