Overview Reviews Product Description Stainless Steel Thread Protector & Flash Hider for 1/2" - 28 Threaded for U9 and U7.62 10" and 16" barrels Features wrench flats for easy removal. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × 1/2" - 28 thread protector Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Review Subject *Comments