MR556A1/HK416 extended picatinny handguard. The 11 inch rail allows for longer sight radius and more rail space. Rifles come factory standard with 9 inch picatinny rail.
Determined at checkout.
Some US states prohibit perceived advertising or marketing of firearm related products to persons under 18 years of age.
Please verify that you are at least 18 years of age.
CLICK HERE TO BUY AMMO 
