PT1 ASSEM. UPPER, .300BLK, 16" HEAVY FLUTED CAR. LENGTH BARREL, 10" TACTICAL HANDGUARD
The .300BLK was developed as an answer to the Soviet 7.62 AK-47. This gives you the ability to use AR mags that will not cause wear on the bolt.
PRECISION / TACTICAL UPPER .300BLK-HFL-CL-TA