This 4" handguard is designed for strong construction, the optimal length and design to make any 9MM or 5.56/.223 pistol look outstanding.

A. Ultra Slim 4 inch M-LOK Handguard with Full Top Rail:

• Guide Type: 4 inch Handguard
• Compatible With: Pistols
• Length: 4 inch / 104.5mm
• Total Weight (including Barrel Nut): 6.6oz/188g
• Barrel Nut: External diameter: 1.35 inch, Inner diameter: 1 inch
• Barrel Nut Thread Size: American Thread 1 1/4-18 UNC
• Wrench Size: 1 1/4" Crowsfoot Nut Wrench
• Rail Type: Picatinny
• No. of Rails: 1
• Material: 6061 Aluminum, Steel(Barrel Nut)
• Manufacturer: ohhunt
• OEM & ODM: Yes
• Works with low profile gas blocks
  
• 7 Sides of M-Lok Slots Around The Body
• M-Lok & Picatinny Rails Hold All Your Accessories
  
• With Anti-rotational Tabs For Secure Fit
• 1913 Rail Meticulously Engineered To Be Ultra Light
• Steel Barrel Nut And Allen Wrench Included

B. Lightweight 4 inch M-LOK Handguard with Part Top Rail:

• Steel Barrel nut and all locking hardwares come with it.
  
• 2 shims included for easy indexing.
• Ultra Slim 1.48” Outside and 1.29” Inside Diameter.
  
• 4 Sides of M-Lok Slots Around The Body.
• Five Integral Anti-Rotation QD Sling Sockets.
• MIL-STD 1913 Picatinny Top rail.
• Rugged 6061 Aluminum Hard Coat Anodized.

• Type: 4 inch Handguard
• Length: 4.33 inch / Pistol length
• Total Weight (including Barrel Nut): 4.2oz/120g
• Material: 6061 Aluminum, Steel (Barrel Nut)
• Fits: 223/556 series Upper Receiver with 1-1/4" 18UNEthread
• Rail Type: Picatinny Weaver
• Barrel Nut: External Diameter:1.35 inch, Inner Diameter:1.24 inch
• Barrel Nut Thread: American Thread 1 1/4-18UNE
• Rail Type: Picatinny
• Manufacturer: ohhunt
• OEM & ODM: Yes

Important Note:

1、Barrel nut should NOT be tightened on the gearwheel side. Please avoid applying any force to the gearwheel/teeth while tightening barrel nut, it may damage its teeth.
2、The distance from center of barrel nut to the top of handguard rail is 1.23". If this distance is the same as the rifle receiver, the handguard rail will be flush with rifle receiver top rail.

C. 4 inch Quad Rail Handguard :

• Guide Type: 4 inch Handguard
• Length: 4 inch
• Fit: AR Pistols
• Rail Type: Picatinny Weaver
• Materials: 6061 Aluminum Alloy
• Finishes: Matte
• No. of Rails: 4
• Net Weight: 7.65oz/217g
• Dimensions: 4.13"(Length) * 2.43"(Height) * 2.43"(Width)
• Handguard: 1.7" internal diameter at its narrowest point
• Barrel Nut: 1.05" internal diameter at its narrowest point
• Includes: 4 inch Quad Rail handguard, barrel nut, castle nut, anti-rotation set screw, Allen wrench.
• Manufacturer: ohhunt
• OEM & ODM: Yes

Important Note:

The aluminum barrel nut is significantly lighter than steel barrel nuts, however it may be subject to damage during installation. We recommend using no more than 35 pounds of torque during installation.