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MODULAR GAS BLOCK LUG Reviews & Ratings

Bolts directly to Modular Gas Block to allow installation of a mil-spec bayonet or lug-mounted bipod on your AR-15. Installs and removes easily with an Allen wrench so you can configure your rifle’s accessory package at any time to fit mission requirements. Precision machined from 4140 steel for optimal strength and rigidity. Includes mounting screws. Modular Gas Block not included.

FITS ONLY #080-000-382 BROWNELLS MODULAR GAS BLOCK

SPECS: Steel, matte black Parkerized finish. 2-5?16" (5.9cm) long, Ѕ” (1.3cm) wide, 2-1?64" (8.3mm) tall. Allen wrench not included

See all of our AR15s and AR15 parts here.

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4 Stars

2 Stars

Reviews Summary

Overall, the MODULAR GAS BLOCK LUG has mixed reviews. Many users praise its compatibility and strength, particularly for the M-16 bayonet, but some experienced issues with sizing and fit, leading to returns. Positive remarks about customer service and product availability at Brownells also shine through.

What Reviewers Are Saying

Fit and Compatibility

50%

Fit and compatibility issues emerged as a significant topic among reviewers. While some found the product perfectly suited for their M-16 bayonets, others reported it being too thick for proper fitment. This inconsistency raises concerns about quality control and suggests a need for improved specifications.

Product Quality

50%

Product quality is a polarizing topic in the reviews. While some users appreciated the solid steel construction and overall strength, others noted defects such as improper machining, which could hinder functionality. This variability indicates a lack of uniformity in quality across batches.

Customer Experience

80%

Reviews highlight a positive customer experience, particularly with Brownells. Users appreciated the extensive selection of parts and efficient ordering process. The availability of the chat line for inquiries also received compliments, indicating satisfaction with customer service.

Customization and Modification

40%

Several reviewers mentioned the necessity of modification to achieve a proper fit. Comments about the need to drill and tap new holes reflect a demand for improved design to enhance compatibility across various firearms, suggesting room for product development.

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Perfect

Perfect fit for m-16 bayonet, uses 10-32 Cap screw, comes with 2 short screws.

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

by RAYMOND C LEVAN on March 27, 2025

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Chat session

I was very pleased to know that Brownells had the part that i was looking for. I will and have always used Brownells. They have a great selection of parts. I am very glad that the chat line was up to speed on the parts they have, and i was finished ordering what i needed in a matter of minutes. Thanks Brownells.

great product

Perfect attachment to use if you want a picatinny gas block but don't want to lose the bayonet attachment. Solid steel very strong went on without problem

Probably works great for some guns...

I have one Anderson rifle and one DPMS. The back hole lines up on the DPMS, and the front hole lines up on the Anderson. I'm going to have to remove, drill and tap the Gas block for either gun for this to fit, but I'm a tool guy so whatever... Fyi to the designers... one or more slotted holes would really increase the chances of this working on a wide range of guns...

Bayonet won't fit, lug too thick

This arrived in the mail today and I have to send it back. The lug is too thick and will not fit inside the recess on an M7 M-16 bayonet. It was machined out of spec and quality control did not catch it. Brownells should check the entire batch of parts on hand. I suspect this is not the only one that's defective.