SD BU9

$129.99
(4 reviews) Write a Review
SKU:
004-SD BU9-D1-M
SD BU9

 

Bolt.

Made with 8620 AISI steel and boasting a Mag-Phosphate finish, the Stern bolt fits into Mil-Spec and Glock-pattern upper receivers.  It functions with Colt SMG, Glock magazines and it's fully compatible with standard AR15/M16 charging handles. Comes fully assembled with all sub-components installed, including firing pin/spring/retaining pin, extractor, and extractor spring.   Also included in bolt assembly is a propriety center and roll pins.  Our 9mm bolts incorporate our new bolt design which caters to single stage triggers with short resets.  It also allows use with the JP silent capture spring. This bolt is compatible with the Law Tactical folding stock and the Echo trigger.

Technical Information:

  •     Made in U.S.A.
  •     Constructed from 8620 AISI steel.
  •     Custom 4140 billet extractor providing superior ejection.
  •     Glock cut.
  •     Coating: Mag-Phosphate
  •     Weight: 15.5 OZ with weight 13.3 OZ without..
  •     9mm
  •     Compatible with single stage short reset triggers.
  •     Compatible with the Law Folding Tactical Stock
  •     Compatible with the Echo trigger.
  •     Compatible with the JP Silent capture spring

4 Reviews Hide Reviews Show Reviews

  • 5
    Sd-bu-9

    Posted by Donald Heald on Jul 16th 2024

    Glock cut bolt carrier is well made and ran flawlessly full auto ….
    Installed it with a little light grease on the slides..
    I ran this paired to a stock carbine buffer spring, paired to my Vltor a-5 10.5 ounce heavy buffer…for testing I ran 115 grain ball…
    I did not have the updated port case deflector installed at the time of testing… however the bolt was flawless and smooth and the majority of my testing was done full auto , this combination of barrel Mag well and bolt carrier is the nicest I’ve seen and used …
    Ran suppressor the entire time and no problems whatsoever gun did flawless full auto mag dumps and flawlessly cycles burst for burst …
    I was getting about 6 rounds off clean every time..
    Easy to stay on target with this combination…
    I highly recommend this upgrade for your gun…

  • 5
    High Quality Manufacturing

    Posted by Ernesto on Feb 14th 2022

    Excellent quality. Works with Law Tactical folder if you remove the weight at the end. Properly manufactured.

  • 5
    ar 9

    Posted by Ian on May 13th 2020

    I was having some issues with another upper with my ad9 mag adapter. With this bolt and a stern barrel. H3 buffer. No issues so far runs very smooth. Looks well made.

  • 5
    SD BU9 replacement 9mm AR bolt

    Posted by Ron M. on Jul 17th 2019

    Dropped into my PSA 10.5 inch upper, perfect function with a Stern Defense Beretta 92 Mag adapter. This let me keep the PAS bolt for use with a Colt mag lower.