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004-SD BU9-D1-M



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

3 Reviews Hide Reviews Show Reviews

  • 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.