Ar-15/m16 Adjustable Gas Blocks.
Pressure Adjustable For Smoother Cycling
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. Standard model features a topside Picatinny rail for mounting flip-up front sights and other accessories. Available in lightweight aluminum or stainless steel for additional muzzle weight. Fits barrels with .750" O.D. at gas block. Heavy - Aluminum, with rail, fits heavy barrels with .936" O.D. Low Profile model fits under handguard on .750" barrels. Rugged, all-steel construction resists gas erosion and helps maintain rifleâs weight distribution. Heavy Low Profile aluminum block fits under handguard on barrels with .936" O.D. Eight Torx T15 screws securely clamp the block to the barrel. A2-Style â Retains the classic look of military rifles and carb ines. Two side-mount hex head screws clamp the block securely to barrels with .750" O.D. at the gas block position. Rugged, stainless steel construction resists gas erosion and helps maintain rifleâs weight distribution. Hard, abrasion-resistant black oxide finish. JPGS-5B and JPGS-5S Low-Profile models have a slimmer profile to reduce weight and to fit under a wider variety of handguards. JPGSA is an adapter designed to allow use of a .936 gas block with a .875 barrel.
AR-15, Issue:11, Page:016
Big Book Catalog, Issue:72, Page:021
Sinclair, Issue:5B, Page:249
- Review Summary
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- Pros Aesthetically Pleasing
- Cons Breaks Easily, Poor Quality, Rusts Quickly
- Describe Yourself Law Enforcement/Military
- Was this a gift? No
- Bottom Line No, I would not recommend this to a friend
Yet another JP piece of junk
I use to buy nothing but JP. Everything they make works well, until it doesnât. I realized this after many parts I purchased over the years became inoperable. This front sight post is no exception. Looks and works great, until I attempted to adjust it. I have severe OCD so I always follow directions to the proverbial T. Turns out the lock screw strips very very easily. On initial installation I put anti seize on it to prevent this very thing. I believe it is just too small of a screw to be a lock screw or to I loosen through the carbon build up. I chalk it up to a design flaw, which in my opinion is a common theme with JP.
- Pros Aesthetically Pleasing, Easy To Install, Good Value, Safe, Tough, Works With Many Guns
- Best Uses Competitive Shooting, Hunting, Self Defense, Tactical, Target Practice
- Describe Yourself Occasional Shooter
- Bottom Line Yes, I would recommend this to a friend
Great front post
If you want to keep your front sight post and be able to adjustable your gas pressure this is a great way to go.Getting it straight up and down is a challenge but if you get the clamp taught you can play around with it until it's good. The finish is very good.
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