Criterion Barrels GI profile chrome lined barrel in 18.5" length. This is a new US manufactured barrel in the original M14 profile. Chrome lined (as were original USGI barrels) and made to NM specs. 1:10 twist rate. The faster twist rate on shorter barrels has been found to increase accuracy with standard weight bullets. Parkerized.
Chrome-lining will extend the life of your barrel and make it easier to clean.
Criterion Barrels unique chrome-lining process maintains bore uniformity, providing you with the advantages of a chrome-lined barrel without sacrificing accuracy.