5.56 NATO 5'' Pistol Length Barrel 1:5 5R Twist Nitride and Micro Gas Tube W/ Gas Block Options (Made in USA)

Specifications:

• Length: 5" Pistol
  
• 5.56 NATO
  
• 1:5 5R Twist
• .750" gas block diameter
• Proprietary Micro Pistol gas system
• 1/2"x28 Thread Pitch
• 4150 Chrome Moly Vanadium
• Black Nitride finish
  
• Made in the U.S.A.
• Fits: AR-15

Micro Gas Tube Features: 

• Length: 5/78
• OD: 0.180 on button end 
• Stainless Steel 
• Made in The U.S.A

Gas Block Options: 

GB750US-ADJ

.750 Low Profile Adjustable Gas Block - Set Screw Style (MADE IN USA)

.750 Low Profile Steel Gas Block with CLAMP-ON

GB06-S

.750 Low Profile Steel Gas Block with CLAMP Stainless - NO Package

GBUS

.750 Low Profile Steel Gas Block Caged with Roll Pins & Wrench- Black

GBUS-S

.750 Low Profile Steel Gas Block Caged with Roll Pins & Wrench- Matte Stainless Steel (MADE IN USA)