AR 15 Gas Blocks | Precision Reflex Inc.

AR15 | AR15/M16 Accessories | Gas Blocks

AR 15 Gas Block to Ensure Reliable Gas Flow

At Precision Reflex we have all of you firearm needs covered and that include the Gas Block. Our AR15/M16 Gas Block With Top Picatinny Rail is a compact block that securely clamps to the barrel using a unique 3-point connection system which provides a solid platform for accessory mounting and also guarantees correct alignment of the gas system for dependable recycling.

AR 15 Gas Block Features

This gas block is constructed from high strength T6 6061 aluminum that gives it an ideal combination of low weight and strength. The Picatinny rail is located on the top side and the entire unit anchors to the barrel by means of 2 hex-head setscrews to the underside of the unit, plus a third screw on the top of the unit. The result is an exception gas seal. Unwanted movement of the gas block is also minimized, preserving proper gas system function.

AR 15 Gas Block Design

The design of this unit is clean with angular lines. The edges are radiussed – so there are no sharp edges. The surface has a mil-spec anodized hardcoat which gives it excellent wear resistance and surface strength. It also has a matt black finish.

This AR15 gas block model fits 3/4” outside diameter barrels. It offers a highly functional design and fits securely to the barrel. It also matches up perfectly with a receiver rail for using back up iron sights.

Please take a look at the product details and image of the AR15/M16 Gas Block With Top Picatinny Rail. If you have any questions about this or any of our firearm products, please let us know by calling 419-629-2603.


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PRI G1 Flip Up Front Sight with .750 w/ set screws Item: 05-0027-G1 Ample Stock
Manufacturer: PRI $207.00
The Original PRi G1 Flip Up Front Sight with .750 diameter apposing set screws. Sight works with the M4/AR15 family of rifles. This sight eliminates the shadow cast on the optical sights and the full circle hood increases the speed of target pick up.
PRI G2 Flip Up Front Sight with .750 w/ set screws Item: 05-0027-G2 Discontinued
Manufacturer: PRI $215.00
The PRi Flip Up Front Sight with .750 diameter apposing set screws. Sight works with the M16/M4/AR15 family of rifles. This sight eliminates the shadow cast on the optical sights and the full circle hood increases the speed of target pick up.
PRI The original G1 Flip Up Front Sight with .750 Crossbolt Item: 05-0025-G1 Ample Stock
Manufacturer: PRI $195.00
PRI Original Flip Up Front Sight w/.750" Crossbolt Design fits barrels .750 dia. M4/AR15. Eliminates the shadow cast on optical sights mounted on the M16 Flattop receiver. Lightweight hard coated black anodized aluminum top post provides Low reflection.
Gas Block with Picatinny Rail 625 dia. Item: 05-625-04 Low Stock
Manufacturer: PRI $67.00
Barrel mounted gas block with picatinny rail at the AR15 elevation.
.875 Low Profile Gas Block Item: 05-875-01 Ample Stock
Manufacturer: PRI $67.00
PRi .875 diameter low profile steel gas block.
.875 Profile Adj Gas Block W/ Straight Gas Tube Item: 05-875-02GT Ample Stock
Manufacturer: PRI $85.00
PRi .875 diameter high strength steel gas block with some fine tuning gas adjustment porting.
.936 Low Profile Gas Block Item: 05-936-01 Ample Stock
Manufacturer: PRI $67.00
PRi .936 diameter low profile steel gas block.
936 Adjustable Gas Block W/ Straight Gas tube Item: 05-936-02GT Ample Stock
Manufacturer: PRI $85.00
PRi .936 diameter low profile high strength steel gas block with some fine tuning gas adjustment porting.
AR15/M16 Gas Block With Top Picatinny Rail Item: 05-075-04 Ample Stock
Manufacturer: PRI $67.00
PRi gas block with Picatinny rail allows the shooter to place a front sight on the rail that is the same elevation as the receiver.
Fat Boy Replacement Gas Tube for M4 Carbine Item: 05-0050 Ample Stock
Manufacturer: PRI $51.00
Fat Boy replacement gas tube for the M4 carbine is designed for the short barreled rifles running on carbine length gas systems. The fat boys greater internal volume reduces cycle rate of the weapon down to 700/850 rounds per minute.
Low Profile Adj Stl Gas Block 750 Diameter Item: 05-075-03 Ample Stock
Manufacturer: PRI $70.00
PRi .750 diameter low profile high strength steel gas block with some fine tuning gas adjustment porting.
Pri Low Profile Steel Gas Block .750 Dia. Item: 05-075-01 Back Ordered
Manufacturer: PRI $58.00
PRi .750 diameter low profile steel gas block.
PRI Flip Up Front Sight with .625 w/ Crossbolt Item: 05-0026 Ample Stock
Manufacturer: PRI $185.00
The PRi Flip Up Front Sight with .625 diameter crossbolt. Sight works with the M16/M4/AR15 family of rifles. This sight eliminates the shadow cast on the optical sights and the full circle hood increases the speed of target pick up.
PRI Flip Up Front Sight with .750 Crossbolt Item: 05-0025 Ample Stock
Manufacturer: PRI $180.00
PRI Flip Up Front Sight w/ .750" Crossbolt Design fits arrels .750" dia. M16 M4 and AR15. Eliminates the shadow cast on optical sights mounted on the M16 Flattop receiver. Lightweight hard coated black anodized aluminum top post provides Low reflection.
PRI Flip Up Front Sight with .750 w/ set screws Item: 05-0027 Ample Stock
Manufacturer: PRI $187.00
The PRi Flip Up Front Sight with .750 diameter apposing set screws. Sight works with the M16/M4/AR15 family of rifles. This sight eliminates the shadow cast on the optical sights and the full circle hood increases the speed of target pick up.
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