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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.


AR-15, Issue:11, Page:016
Big Book Catalog, Issue:68, Page:016
Law Enforcement / Police Store, Issue:09, Page:054
New Product Supplement, Issue:602, Page:004

SPECS: Steel, mil-spec phosphate finish. Unless otherwise noted, fits .750" diameter barrels. 4-Rail - 1-7⁄8" (4.8cm) long, 1-1⁄4" (3.2cm) wide, 1-3⁄4" (4.4cm) high. 5.7 oz. (162 g) wt. 2-Rail - 1-3⁄4" long, 1-1⁄4" wide, 1-3⁄4" high. 5.4 oz. (153 g) wt. Single-Rail w/Lug & Swivel - 1-7⁄8" (4.8cm) long, 1-3⁄16" (3cm) wide, 1¾" (4.5cm) high. 5.5 oz. (155g) weight. Single Rail - 1-7⁄8” (4.8cm) long, 1” (2.5cm) wide, 1-5⁄8” (4.1cm) overall height, 9⁄16” (1.5cm) rail height. 4.4 oz. (124g) weight. Fits barrels with .750” O.D. at the gas port. Single-Rail A1 - 1-7⁄8" (4.8cm) long, 1" (2.5cm) wide, 1-5⁄8" (4.1cm) overall height, 9⁄16" (1.5cm) rail height. 5.1 oz. (145g) weight. Fits M16A1-style barrels with .625" O.D. at the gas port.

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4 RAIL GAS BLOCK
100-002-074WB
AR-15 Gas Block 4-Rail Picatinny .750 Steel Black
100002074AR-15 Gas Block 4-Rail Picatinny .750 Steel Black

Mfr Part: YHM9380

$74.20

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Inside Diameter: .750

Material: Steel

Style: Rail

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TWO PIECE GAS BLOCK
100-002-076WB
AR-15 Gas Block 2-Rail Picatinny .750 Steel Black
100002076AR-15 Gas Block 2-Rail Picatinny .750 Steel Black

Mfr Part: YHM9390A

$67.00

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Inside Diameter: .750

Material: Steel

Style: Rail

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YHM9836A RAILED GAS BLOCK W/BAYONET LU
100-003-172WB
AR-15 Gas Block Single Rail w/Lug Picatinny .750 Steel Black
100003172AR-15 Gas Block Single Rail w/Lug Picatinny .750 Steel Black

Mfr Part: YHM9836A

$71.30

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Inside Diameter: .750

Material: Steel

Style: Rail

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SINGLE RAIL GAS BLOCK .625 DIA. BARREL
100-005-965WB
AR-15 Gas Block Single Rail Picatinny .625 Steel Black
100005965AR-15 Gas Block Single Rail Picatinny .625 Steel Black

Mfr Part: YHM9386A

$59.70

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Inside Diameter: .625

Material: Steel

Style: Rail

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.750 DIAMETER SINGLE RAIL GAS BLOCK
100-009-089WB
AR-15 Gas Block Single Rail Picatinny .750 Steel Black
100009089AR-15 Gas Block Single Rail Picatinny .750 Steel Black

Mfr Part: YHM9385A

$59.70

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Inside Diameter: .750

Material: Steel

Style: Picatinny, Rail

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AR-15 GAS BLOCK PICATINNY