Stern Defense SD 4in MOD4 .40SW Upper Receiver Assembly 4in M-LOK Handguard .578-28 TPI 1-16 Twist Rate Black 015SD4INMD4ML4INBR40SWKK. The free float Mlok handguard from Stern Defense offers excellent ergonomics while remaining lightweight and strong....

In stock
ShipAmount $0.00
RevType 2
Manufacturer Stern Defense
Sku 015SD4INCHMOD4MLOK4INCHBARREL40SWKK
Identity 30876978286