5.56 HPT/MPI M-16 Bolt Carrier Group with PSA rear flip up sight

Bolt Carrier Group Made in USA.  Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected.   Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside.  Made by a Mil-spec contractor, there is no laser engraved logo. PSA Aluminum Flip up rear sight: American made. Dual aperture rear sight with windage adjustment. Mounts to pictinny rail.  Sight flips up with a sturdy snap and no wobble.  Steel locking helicoil inserts keep the sight mount secure.  This is the 2nd gen updated to allow the sight to tighten down on the rail with less effort. Features: Milspec Carpenter No. 158® steel bolt Shot Peened Bolt High pressure tested Mag particle inspected Chrome Lined Carrier (AUTO) Chrome Lined Gas Key Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked Per Mil-Spec Tool Steel Extractor Extractor SpringSKU: 46284 Aluminum Rear sight Dual aperture Windage adjustment SKU: 38183