CREATE TABLE table_17833 ("Colt model no." TEXT, "Name" TEXT, "Stock" TEXT, "Fire control" TEXT, "Rear sight" TEXT, "Forward assist" TEXT, "Barrel length" TEXT, "Barrel profile" TEXT, "Barrel twist" TEXT, "Hand guards" TEXT, "Bayonet Lug" TEXT, "Muzzle device" TEXT)

What is the muzzle device on the colt model le1020?
SELECT "Muzzle device" FROM table_17833 WHERE "Colt model no." = 'LE1020'
SELECT "Muzzle device" FROM "table_17833" WHERE "Colt model no." = 'LE1020'