AR-15 Gas Block 4-Rail Picatinny .750 Steel Black

Picatinny Options To Fit Your Application

Unique, all-steel gas blocks expand the versatility of your rifle by providing a variety of accessory rail and handguard mounting options. Especially helpful in customizing short-barrelled tactical rifles. Machined from bar stock for extra strength and rigidity, then mil-spec Parkerized for exceptional wear- and corrosion-resistance. One-piece, 4-Rail model features top/bottom and side rails that accept Weaver or Picatinny mounted, tactical accessories, including the Yankee Hill Gas Block Front Flip Sight. Secures to barrel with included setscrews. 2-Rail gas block is an easy-to-install, two-piece unit that clamps around the barrel using four hex screws; includes machined top and bottom Picatinny rails only. Single-Rail w/Lug & Swivel adds a top-side Picatinny rail for mounting accessories, and provides a bayonet lug and sling mount like an A2 gas block/front sight tower. Two-piece design clamps your rifle’s standard contour, .750" diameter barrel with four, capscrews—no need to remove muzzle brake or flash suppressor to install. Bayonet lug accepts a mil-spec bayonet or lug-mounted bipod, and pivoting, rubber-coated sling swivel accepts tactical slings up to 1¼" wide. Single Rail has four Picatinny slots on top. Clamps to your rifle’s standard contour, .750" O.D. barrel with two setscrews. Single-Rail A1 fits skinny .625" O.D. M16A1-style barrel and provides four Picatinny rail slots to let you install a clamp-on auxiliary “iron” sight or other accessory. Slides over barrel (flash hider must be removed to install) and clamps with two hex head screws.