This listing is for a Midwest Industries Blast Diverter for a .223 / 5.56 with 1/2x28 threads.   It's in perfect condition.  Does NOT include a crush washer.   Thanks for looking!

The text below is from the Midwest Industries website:

• Linear comp design diverts muzzle blast forward
• Constructed of tool steel with a phosphate finish
• 1/2 — 28 threads for 5.56/.223 pistols or rifles
• 4.1 oz weight
• 1.75 inches length
• 1.090" outside diameter
• 100% made in the U.S.A.
• Lifetime Warranty