STERN DEFENSE
Shop STERN DEFENSE at Arms East. U.S. shipping and Canadian PAL export available.
- Rifle Parts Add to cart
Stern Defense 001-SD MAG-ADD-FLARE speeds up reloads with precision CNC-machined construction and ergonomic design. Made in the U.S.A., it’s compatible with MAG-AD9, MAG-ADMP9&40, and MAG-ADMP45 adapters.
$73.00Low Stock 
Stern Defense 008SDRABADD1M Rapid Attach Buttstock Adapter Black Aluminum/Steel
STERN DEFENSEAdd to cartOther Rifle Accessories & Parts Add to cartStern Defense RAB-AD features quick-detach design with 30-degree twist operation and automatic steel locking mechanism. Built from 7075 aluminum with steel internals, it works across all AR platform operating systems.
$139.99In StockStern Defense 015SD10INCHMOD5MLOK855 9mm 8.50″ Black Melonite Barrel 7075-T6 Aluminum Anodized Receiver
STERN DEFENSEAdd to cartAR15 Uppers Add to cartStern Defense complete 9mm upper assembly features a 10-inch M-LOK rail, 8.50-inch Melonite barrel, 7075-T6 aluminum anodized receiver, and includes SD BU9 bolt, SD CH1 charging handle, and SD HBC 9MM Blast Can.
$498.56Low Stock- AR15 Uppers Add to cart
Stern Defense 15 Inch Mod 4 M-Lok 9mm Carbine delivers a complete shooter-ready package with integrated M-LOK rail, Glock-cut bolt, and SCB 9 compensator. Built on a 7075-T6 aluminum anodized receiver with a 16.1″ Melonite
$539.00Low Stock - AR15 Barrels Add to cart
Stern Defense 9mm barrel features durable 4150 chrome-moly steel with Melonite coating and Made in the USA construction. This 16.1-inch barrel delivers quality performance with 1:10 twist rate and 1/2-36 threading.
$139.00Low Stock - AR15 Uppers Add to cart
Stern Defense 9mm upper receiver features a Melonite-finished steel barrel with 1:10″ twist and .5-36 threaded muzzle, complete with bolt carrier group and 4″ MOD 4 M-LOK handguard, compatible with Glock-pattern lowers. Made in the USA.
$443.48Low Stock - Other Gun Accessories & Parts Add to cart
Stern Defense 9mm barrel delivers 6 inches of Made in USA 4150 chrome-moly steel with Melonite coating and 1/2-36 threading for reliable performance.
$110.00Low Stock - Other Gun Accessories & Parts Add to cart
Stern Defense 9mm complete bolt assembly features 8620 AISI steel with Mag-Phosphate finish for superior corrosion resistance and arrives fully assembled, ready to shoot. Compatible with Mil-Spec and Glock-pattern uppers, Colt SMG and Glock magazines, plus standard AR15/M16 charging handles.
$132.00Low Stock - Other Gun Accessories & Parts Add to cart
Stern Defense MAG-ADMP9&40/P320 converts your AR-15 lower to fire S&W M&P and P320 magazines in 9mm/.40 S&W with Made in USA precision engineering. Installation requires no permanent modifications and delivers true last-round hold open functionality.
Original price was: $209.00.$186.99Current price is: $186.99. SALELow Stock - Other Gun Accessories & Parts Add to cart
Stern Defense AR-15 9mm conversion adapter lets you feed your AR-15 platform rifle with standard Glock magazines. Compatible with 9mm and .40 S&W platforms.
$201.00In Stock - Other Gun Accessories & Parts Add to cart
Stern Defense Bolt converts your AR-15 to .45 ACP with USA-made steel construction and mag-phosphate corrosion resistance. Compatible with Glock pattern uppers and both Colt SMG and Glock magazines.
$150.65Low Stock - AR Triggers Add to cart
Stern Defense H2S Drop In Trigger delivers a smooth 2 lb first stage and positive 4 lb second stage in a mil-spec compatible design proven through 250,000+ rounds of testing. Direct drop-in replacement for AR-15 and AR-10 platforms with machined aluminum housing and tool steel components.
$137.00Low Stock - Rifle Parts Add to cart
Stern Defense MAG-AD Ejector Replacement Kit restores reliable magazine ejection with heat-treated 1050 spring steel construction and electroless-nickel coating for extended service life.
$11.00In Stock Stern Defense Rapid Attach Mini Buttstock Adapter Black Aluminum Steel Accessory
STERN DEFENSEAdd to cartPistol Grips Add to cartStern Defense Rapid Attach Mini Buttstock Adapter features quick 30-degree detach/reattach with steel locking mechanism, built from durable 7075 aluminum for AR platform systems.
$139.99In Stock
