THIS MUST BE USED WITH A 11 OUNCE BUFFER OR HEAVIER WHEN USING A CARBINE SPRING. 45ACP UPPERS MUST HAVE AN ENLARGED EJECTION PORT. WHILE OUR 45 BOLT WILL ACCOMMODATE A JP SILENT CAPTURE SPRING. WE DO NOT RECOMMEND IT AS 45ACP CAN DAMAGE THE JP SYSTEM. Bolt. Made with 8620 AISI steel and boasting a Melonite 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 45 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 but is not recommend for 45acp applications. This bolt is compatible with the law tactical folding stock. Technical Information: made in specialized factories Constructed from 8620 AISI steel. Custom 4140 billet extractor providing superior ejection. Glock cut. Coating: Melonite Weight: 15.5 OZ. 45acp Compatible with single stage short reset triggers. Compatible with the Law Folding Tactical Stock Compatible with the JP Silent capture spring(not recommended for 45acp) Share Share Tweet Pin it +1 Specifications for Stern Defense SD BU45 .45 ACP Bolt Carrier for AR-15 Glock-Pattern Upper Receiver: Manufacturer: Stern Defense Color: Black Finish: Phosphate Chrome Fabric/Material: Melonite Cartridge: .45 ACP Gun Make: AR Platform Gun Model: AR-15 Additional Features: Compatible with the JP Silent capture spring(not recommended for 45acp), 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., Constructed from 8620 AISI steel Condition: New Weight: 15.5 oz Bolt Material: 8620 Steel Carrier Material: 8620 Steel Package Contents: Stern Defense SD BU45 .45 ACP Bolt Carrier for AR-15 Glock-Pattern Upper Receiver
3 reviews for Stern Defense SD BU45 .45 ACP Bolt Carrier for AR-15 Glock-Pattern Upper Receiver
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Chris –
I bought this bolt carrier for my latest 45 build and couldn’t be more pleased. Quality is evident in the fit and finish with even coating and nice clean machining lines. Function has been flawless through several hundred rounds now. I would definitely recommend Stern Defense bolt carriers.
Nathan –
I live in Cali, so I had to use a Mag-Ad, and the Stern was my choice from reputation, and their reputation holds true. Great quality bolt. If you are using the Stern Mag-Ad, you HAVE to use this bolt. The Stern Mag-Ad takes S&W mags, so you are limited in mag capacity. I was using a Foxtrot bolt and it would jam pretty much every shot. Save yourself the frustration, get this bolt if you are going to use their Mag-Ad. You will also need their 11oz buffer.
IanMT –
Using on a Foxtrot Mike build. Feeds like a dream with the right mags. But beware, I was using the recommended 11oz buffer I got at Midway and it was too short. The faux gas key was hitting the lower receiver and sheared off. Totally my fault. Reached out to Stern before I figured it out and they did contact me back. I will be replacing it with another Stern if still in stock.