Alexander Arms .17 HMR Complete Upper Assembly
Caliber: 17 HMR
Barrel: 18" Stainless Threaded Barrel
Threading: 1/2-28RH
Twist Rate: 1:9
Muzzle Device: A2 Flash Hider
Operating System: Blowback
Finish: Black
Magazines: Two 10-Round Magazines
Weight: 4.5lbs
Parts kit for lower receiver conversion included
UPC 819511021295
SKU UST-17ST