The upgraded Stern Defense SD BU40 Bolt Carrier is a premium upgrade for your rifle that will ensure proper functioning. These Bolt Carrier Groups made by Stern Defense are built out of 8620 AISI steel and Mag-Phosphate finished to ensure a strong, reliable part that will withstand repeated firings and give you extended service life. This Stern Defense SD BU40 AR Bolt Carrier is compatible with single stage short reset triggers and compatible with the Law Folding Tactical Stock and the Echo trigger, offering a lightweight option for your weapon build. Gain enhanced durability and superior ejection with every shot when you install this .40SW Stern Defense SD BU40 Bolt Carrier. Specifications for Stern Defense SD BU40 Bolt Carrier: Manufacturer: Stern Defense Color: Black Finish: Phosphate Chrome Gun Model: M16, AR-15 Weight: 15.5 oz Bolt Material: 8620 Steel Carrier Material: 8620 Steel Features of Stern Defense SD BU40 Bolt Carrier 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. .40SW 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 (Not recommended) Package Contents: Stern Defense SD BU40 Bolt Carrier
2 reviews for Stern Defense SD BU40 Bolt Carrier
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stephen –
The bolt carrier's quality looks as good as any that i've used in the past. The problem is that I haven't used it yet. I can't find a .40 barrel to pair it with. I am a patient person, but i'm tired of the wait. I'm sure the BCG is worth 5 stars, but i need to see it work first.
RealityHitsLikeAHammer –
WAS having the same problems as the other reviewer because at first ibhad ordered the barrel in as going to use here on o.p…. after the 5th and 6th time the projected shipping date was changed to a month later(and I. Still not entirely convinced funds weren't removed because the item had not shipped, I got a barrel from n.f.armory… cut in a very slight feed ramp, with a new frontier upper reciever and cheapo matrix arms handguard+10oz kvp tungsten buffer weight, this thing runs like a champ, either i got lucky or all those horror stories with everyone else and this platform paid off because it runs great, but the 10oz buffer weight was CRUCIAL to avoid feeding issues. Great product functions perfect and locks back every time.