All of the parts are Inland, any reason why the barell would not be dated?

Inland Low serial number M1 Carbine - posted in M1 SERIES OF CARBINES REF: I recently picked up an early Inland, notice there is not a date on the barell.

The ordnance cartouche on the stock was perhaps a bit larger on the originals, and an additional mark on the barrel underside and in the barrel channel serves to ID the new Inland carbine. You can differentiate the new Inland carbine from its sire by the serial number beginning with 9000, which never appeared on the originals.

Consistent features of the carbines in this range included a two-rivet handguard, narrow barrel band, flip rear sight, and push-button safety. Serial numbers of the Inland M1 carbine actions made during this period ranged from 70,000 - 950,000, and many of these actions were put into M1A1 stocks. Description: semi auto action - 18' barrel, front fixed/rear peep sight - walnut/ folding stock- legible markings - 3rd Variation - parkerised finish 85% w/ normal wear to action - no markings on barrel - has a Check Recoil Muzzle suppresser attached - oil finished stock in good condition w/ no cartouches - metal folding buttstock w/ no markings - J.A.O stamped on safety lever - HI on magazine.

Inland m1 carbine serial number lookup