JP Enterprises A2 Front Sight Adjustable Gas Block - Black Stainless - JPGS-2FS
$149.95
Only 1 left in stock
The JPGS-2FS is an A2/M4 front sight assembly that replaces existing pin-on assemblies and provides a gas adjustment. This unit can also be used as a front sight only to extend the sight radius of any existing carbine or rifle.
- Full coverage around gas port providing improved seal and better heat dissipation
- True clamp-on design with two positive clamping screws
- Easy to access side gas adjustment
Specifications:
- Barrel Diameter: .750
- Finish: QPQ
- Weight: 3.9 oz.
- Material: 416 stainless
- Weight: 3.9 oz.
- Length: 1.870″
- Height: 3.400″ (overall), 2.650″ (over bore)
- Width: .870″
- Attachment: 10-32 x 1/2″ socket head screws, 5/32 hex drive
(includes 5/64″ x 5/16″ roll pin for gas tube installation) - Adjustment: 8-32 x 1/4″ stainless set screw, 5/64 hex drive (hex key included)
Installation:
The installation of this gas block requires use of a 6-32 H1 or H2 bottoming tap.
| Weight | 3.84 oz |
|---|---|
| Dimensions | 1.8 × 0.87 × 3.4 in |
| Finish | Nitride / Melonite |
| Gas Block Journal | 0.75 |
| Adjustable | Yes |
| MPN | JPGS-2FS |
| UPC | 812872021454 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Good as gold, like everything JP makes
As always, JP makes another top notch product.
USHigh quality
The machining and finish is very clean. I can’t wait to use it on my build.
USMay be great but not sure yet....
I was excited to get this so I could complete a recent retro build with this adjustable A2 front sight. However I am having difficulty aligning the gas port with the gas hole in the barrel. Since it did not immediately line up I have been making minor adjustments and after 5 tries I have still not gotten close enough to correct alignment for the pressure to cycle the BCG. Will keep trying. Looks great and easy enough to install sans the above issue.
USReally Nice
The a quality is great. Followed adjustment instructions and function is fine. The dual screw set up is a little awkward but if you don't think you'll be adjusting all the time it's not an issue. With my rifle I'm now able to run a lighter buffer shooting suppressed.
USAlmost perfect adjustable gas block
This is a very well fitting gas block that comes with the front sight post already installed and fits on a .75” dia rifle barrel perfectly. My only complaint and I knew it when I purchased it is a separate sling does not have the ability to mount to this and does not have a bayonet mount. I will be fabricating a sling mount to work with this by modofying an existing one but is not ideal. Otherwise it is a great product but pricey. I do have the pin on sight but I’m not a gunsmith so this was my best route to assemble.
