FALL BUILD FEST IS ON - Shop Exclusive Deals & Offers!
+ 12% Off Select AR15 Parts Use Code: ARBUILD12

FALL BUILD FEST IS ON - Shop Exclusive Deals & Offers!
+ 12% Off Select AR15 Parts Use Code: ARBUILD12

Daily Deal - SCT Stripped G19 Frame ~~$54.99~~ $45.99 - Get Yours!

AR-15/M16 ADJUSTABLE GAS BLOCKS Reviews & Ratings

Replaces the factory front sight/gas block and allows you to tune the gas system for smoother cycling and operation. Especially critical on match and varmint rifles when shooting both factory and custom-loaded ammunition. Simple setscrew lets you control the gas flow, so you can customize the setting for each load. Hex head setscrews clamp the block securely to the barrel. Installation instructions included.

This is a standard-height A2 front sight gas block, not the taller "F-marked" height.

Low Profile model fits under handguard on .750" barrels. Rugged, all-steel construction resists gas erosion and helps maintain rifle’s weight distribution. JPGS-5B and JPGS-5S Low-Profile models have a slimmer profile to reduce weight and to fit under a wider variety of handguards.

SPECS:

Low Profile - Carbon steel, matte black. 17/8" long, 1" (2.5cm) wide. .750" I.D.

A2-Style - 416 stainless steel, matte black oxide finish. 17/8" long, 7/8" (2.2cm) wide, 33/8" (8.6cm) high, .750” I.D.

See all of our AR15s and AR15 parts here.

View Product

Write a review

3 Stars

Reviews Summary

Customers generally appreciate the adjustability and performance of the AR-15/M16 Adjustable Gas Blocks, praising their ease of installation and tuning. However, several users report issues with fit under certain rails, inconsistent quality control, and challenges with gas tube alignment. Overall, it's seen as a quality product with room for improvement in specifics.

What Reviewers Are Saying

Adjustability and Performance

70%

Many reviewers highlight the gas block's adjustability, which allows for fine-tuning of the rifle's gas system, resulting in smoother operation and less recoil. Adjustments are reported to be easy, making this feature a favorite among users, noted by around 70% of reviewers.

Installation Challenges

40%

While installation is generally described as easy, numerous customers faced specific challenges such as gas tube fit and alignment issues, particularly with certain rail systems. This concern was raised by about 40% of the reviewers, indicating a need for more consistent manufacturing quality.

Quality Control Issues

35%

Several users expressed disappointment regarding quality control, noting that not all gas blocks were manufactured to the same standards. Problems such as improperly drilled gas tube holes were noted, impacting functionality. Approximately 35% of reviewers mentioned these quality issues.

Value for Money

60%

Reviewers appreciate the competitive pricing of these gas blocks, with many feeling they provide excellent value considering the features and build quality. This sentiment is echoed by about 60% of users who find it a worthy investment.

Customer Support

30%

Some customers commented positively on customer support experiences, although others noted frustrations with returns or troubleshooting issues. This feedback reflects a mixed experience, with around 30% of reviews mentioning customer service interactions.

Sort by Filter by rating

Two stars for the looks.

Went on easily however due to the width of the overall gas Block my 17 bear creek arsenal hand guard would not fit over it... so now Im out 103 dollars total including shipping plus I have to buy another one. Im sure it works great but you also have to throw up a hope and a prayer since they have no measurements of the total width.. or maybe the gun smith helping me is wrong I dont know. Either way, I am very upset and out more money and have to wait longer for other parts to ship in...