Stern Defense SD .40SW AR-15 Barrel

Stern Defense Barrel .40 SW 16.1 Threaded Barrel

Stern Defense SD .40SW AR-15 Barrel 4in .578-28 TPI 1-16 Twist Rate Black BR4IN-D1-M

Stern Defense SD .40SW AR-15 Barrel 8.5in .578-28 TPI 1-16 Twist Rate Black BR8.5IN-D1-M

Stern Defense SD .40SW AR-15 Barrel 10.5in .578-28 TPI 1-16 Twist Rate Black BR10.5IN-D1-M

Stern Defense SD .40SW AR-15 Barrel 6in .578-28 TPI 1-16 Twist Rate Black BR6IN-D1-M

Stern Defense SD 8.5in MOD5 .40SW Upper Receiver Assembly 10in M-LOK Handguard .578-28 TPI 1-16 Twist Rate Black 015SD10INMD5ML8.5INBR40SWKK

Stern Defense SD 16.1in MOD4 MLOK .40SW Upper Receiver Assembly 15in M-LOK Handguard .578-28 TPI 1-16 Twist Rate Black 015SD15INMD4ML16.1INBR40SWKK

Stern Defense SD HBC45 Muzzle Device Black 003-SD HBC45-D1-M