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.750 Gas Block Adjustable LoPro, Steel, Blk Phosphate

AR-15 Skeletonized Lo-Pro Gas Block .625 Steel MP Black

$24.65

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Out of Stock

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Specifications

Color:

Black

Gas Block Style:

Screws

Gas Block Diameter:

0.936 Inches

Material:

Steel

Model Number:

AR-15 Low-Profile

Finish:

Manganese Phosphate

Quantity:

Make Model Fit:

AR-15.Universal;AR-308.Universal

Restriction

Gun Part Restrictions:

Yes

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What is the SADLAK INDUSTRIES - AR-15 Low Profile Gas Block .936 Steel Black?

All of SADLAK’s Gas Blocks are made in the USA by craftsmen with years of experience delivering consistent quality. All the bores are precision honed and all critical measurements are 100% inspected to insure consistency and quality.

Available in a multitude of sizes and styles, Sadlak’s Gas Blocks are a great option if you are building an AR or if you are just looking to upgrade. The Gas Blocks are available in .625”, .750”, .875”, or .936”. They also feature option such as Clamp-Style, Slip-On, Skeletonized, or Adjustable, and all attaching hardware is included. All Gas Blocks except for the Picatinny Rail Gas Block are Low-Profile. Finishes include Black Nitride or Manganese Phosphate. The Sadlak Gas Blocks Mounts securely to barrel with included setscrews. Clamp-on models squeeze around the barrel as you tighten the side-mounted setscrews. Slip-on models are anchored by setscrews on the underside. Low Profile fits under a free-float handguard and lets you use a longer on carbine-length barrels for a clean, streamlined look with more gripping surface. Extended Nose is like Low-Profile, but with an extended sleeve that covers taper pin holes left by the issue A2-style sight tower.

SPECS: 6061 T6 aluminum, hardcoat anodized, black, or 1018 alloy steel, Parkerized, black. Barrel O.D. measured at gas port.

SKU	BBL. DIA.	LENGTH	WIDTH	HEIGHT	WEIGHT
100-006-899	.625"	.95" (24mm)	.775" (20mm)	1.3" (33mm)	1.4oz (40g)
100-005-337	.750"	.95" (24mm)	.90" (23mm)	1.4" (36mm)	1.4oz (40g)
100-005-339	.750"	.95" (24mm)	.90" (23mm)	1.5" (38mm)	1.8oz (51g)
100-008-732	.750"	1.85" (47mm)	.90" (23mm)	1.4" (36mm)	1.9oz (54g)
100-006-900	.875"	.95" (24mm)	1.0" (26mm)	1.4" (36mm)	1.6oz (45g)
100-005-340	.936"	1.4" (36mm)	1.2" (30mm)	1.7" (43mm)	1.4oz (40g)

100-005-342	.936"	1.7" (43mm)	1.2" (30mm)	1.7" (43mm)	2.6oz (74g)

See all of our AR15s and AR15 parts here.

Gun Part Restriction
Gun Parts have restricted shipping to CA.

Available options

Image	Description
	Low-Profile, Slip-On, Steel Brownells #: 100005337
	Low-Profile, Clamp, Steel Brownells #: 100005339
	Low-Profile, .625" Bore Dia., Steel Brownells #: 100006899
	.750 Gas Block Lightweight Low Profile, Steel, Blk Nitride Brownells #: 100036429
	.750 Gas Block Adjustable LoPro, Steel, Blk Phosphate Brownells #: 100036430
	AR-15 Skeletonized Lo-Pro Gas Block .625 Steel MP Black UPC: 855981008657
	AR-15 Low Profile Gas Block .625 Steel Black Nitride Brownells #: 100054237
	AR-15 Low Profile Gas Block .750 Steel Phosphate UPC: 855981008688
	AR-15 Low Profile Gas Block .750 Steel Nitride UPC: 855981008701
	AR-15 Low Profile Gas Block .936 Steel Black UPC: 855981008473

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Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.
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Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.
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Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

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AR-15/M16 GAS BLOCKS REVIEWS

3.3

24 Reviews

5 Stars

46%

4 Stars

13%

3 Stars

2 Stars

1 Stars

33%

Reviews Summary

Reviews of the AR-15/M16 gas blocks reveal mixed sentiments, with some praising solid construction and proper fit, while others report defects like misaligned holes and sizing issues. Many emphasized good performance upon proper installation, but a significant number encountered quality control problems that complicated their builds. Overall, quality varies widely among users.

What Reviewers Are Saying

Product Quality and Defects

35%

Customers have reported a range of product quality, from some high-quality gas blocks fitting perfectly to others with severe manufacturing defects like misaligned holes and improper sizing. About 35% of reviewers mentioned significant flaws that hindered functionality, leading to disappointment.

Fit and Installation

40%

Many reviews highlight the importance of fit, with some gas blocks fitting well while others required modification. Reviews indicate a divide, where roughly 40% of users faced compatibility issues, noting that installation might not be straightforward for all barrel types.

Value for Money

30%

Some reviewers appreciated the competitive pricing of the gas blocks, considering them a good bargain despite quality concerns. Nearly 30% of comments reflected that the gas block offered decent performance at a lower price point, making it appealing for budget-conscious customers.

Customer Experience

20%

A subset of reviewers expressed frustration with shipping and customer service, particularly when items arrived defective or incomplete. About 20% mentioned poor quality control as a contributing factor to their negative experience, leading them to suggest opting for better-known brands.

Performance

25%

Many users who successfully installed the gas block reported positive performance in terms of cycling and gas flow. About 25% of reviewers whose installations went right praised the gas block’s operation, though contingent upon correct fitting and quality.

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Worked well

Good value, works very well. No issues installing ("pencil" barrel AR).

Would you recommend this? Yes, I would recommend to a friend

by HENRY FRANKLIN SIMS on May 30, 2026

Verified Purchase

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Simple and easy.

Works well and is simple enough to attach.

by RICHARD TAYLOR on August 31, 2023

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Fits like a glove

This item fits like a glove and is high quality. Installed on a SW Midlength melonite 5R barrel. Snug perfect fit. Covers 100% of surface that the regular sight tower once covered leaving no unfinished metal. Gas roll pin hole is tight.

Great replacement for front sight tower

Fits perfectly and completely covers notches machined into barrel for the sight tower taper pins. Looks great on Stainless barrel, too.

Quality Gas Block!

Been using Sadlak Low Pro gas blocks for a long time, so when I needed one for the .625 profile, this was the one I ordered. Fit was tight on my Brownells barrel, so it needed a bit of fitting to get the perfect fit. About 5 minutes of sanding and test fitting and it was good to go!

View All 24 Reviews

Customer Questions

0 Questions

SADLAK INDUSTRIES - AR-15 Low Profile Gas Block .936 Steel Black

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AR-15/M16 GAS BLOCKS REVIEWS

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