BOLT, AR-15, 5.56 NATO, MIL-SPEC, BLACK NITRIDE, WILSON COMBAT
SKU: TR-BOLT556-BN
Wilson Combat
Our complete bolt assembly is precision machined from 9310 tool steel, shot-peened for increased strength and includes a tool steel extractor and ejector, appropriate extractor spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).
Constructed with the utmost precision, our bolt assembly is crafted from 9310 tool steel and shot-peened for even greater strength. It features a 4140 gun quality extractor made of annealed cold-drawn steel per Mil-Spec, plus a matching ejector, extractor spring, and more. This top notch piece is High-Pressure Tested (HPT) as well as Magnetic Particle Inspected (MPI), so you can trust it will provide reliable performance whether you need it as backup or to start your own custom rifle build!
Bought this spare 5.56 bolt JIC the OEM goes down or Murphy pays a visit. Bought when WC had em on sale, couldnt go wrong with people who know quality and having done business with WC for some time now. Headspaced/TEST-fired and stuffed inside my BCM grip. Gtg. Thanks Wilson
Picked up 2 of the bolts for spares just incase a gun goes down, Didnt find any MPI marking on either, But if Wilson says they have been tested I have no reason to not believe. Been buying Wilson parts since the early 90s This shop doesnt deal in junk