Lightweight midlength rail ezpz install - Daniel Defense AR-15 Lite Rail III 9 Inch Mid-Length 01-002-09333

but make SURE you've installed the screws BEFORE torquing down the barrel nut (supplied).

AFTER installing a barrel with Loctite Red (big believer in Fulton Armory's guidance here) with enough time to set up, I realized the screws weren't going to just "fall in to place". Sure, the backing plate is loose, but not so much that you can easily angle the screws in, so this marred - ever so slightly - the upper. But WTH, I'm not after any beauty prizes with the gun, just would like better/more complete directions than DD provided. Measure twice, cut (or install) once, I guess, I should have test fit everything first. Who know.

But once ON the gun, this is a very functional piece, lining up smoothly with the Spike's upper I chose for my build. This kit even came with three ladder type rail guards. It slipped right over a Seekins precision adjustable gas block, too, with more than enough clearance and the block's out front where you can adjust it without interference from the rail.

Not only would I buy one again, I did (with a coupon, I bought the first one on Father's day sale). Making a matching gun for my wife.