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Questions & Answers
Will this work on an ar pistol Expert Answer

Yes, it will as long as you match the gas block diameter needed for your specific barrel with the labeled size.

by Armando R., Gear Expert, July 11, 2019
Is this really a superlative arms block that has simply been rebranded by spikes? The description labels it a superlative arms gas block... Expert Answer

Yes, this is a Superlative Arms gas block and has been branded by Spike's. Like another user states, the "Bleed Off" gas block design is patented by Superlative Arms. This is all referenced by Spike's as well.

by Armando R., Gear Expert, July 11, 2019
Customer Reviews
Helpful Positive Review Spikes adjustable bleed off by Krondo, April 22, 2019
Rebranded superlative arms bleed off gas block to spikes tactical. Seems very nice. Was same price as superlative arms bleed off. Ordered it cause optics planet dont have superlative arms stamped one. Good finish. Would buy again.
3/3 found this helpful
Helpful Positive Review Serves its purpose! by Ghosty, Verified Owner, August 10, 2022
Adjustable gas blocks are a must when running suppressed. Spikes can be hit or miss but this one is a hit. Would definitely buy again for a future build. Everything it says it does, it does. I feel like they could do better on the price though.
1/1 found this helpful
Helpful Positive Review Easy to Install and Adjust by Nick, Verified Owner, February 15, 2020
It was easy to install the Spikes Tactical Adjustable Gas Block. It is the exact same product as Superlative, except the Spikes Tactical Logo. The installation was easy. My barrel came with one dimple and I added the second one by tightening the firs...
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1/2 found this helpful
Helpful Positive Review must have for any ar plat9 by Gabe, Verified Owner, February 21, 2020
To give credit, this is designed by superlative arms with spikes logo stamped on it. That said, it's the best adjustable gas block out there. It vents any excess pressure beyond what you set it at. I run this on a 7" barrel ar15 with and without a su...
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2/2 found this helpful
Helpful Positive Review S(uperlatove Arms)pike's gas block helps fine tune those finniky setups by Dan, Verified Owner, June 18, 2019
After I purchased one of these adjustable gas blocks, I decided they are required on all of my AR platform rifles. They adjust with ease, fit well and even have an option for a dimpled barrel, which I prefer over the clamp on design. They do cost a b...
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9/9 found this helpful
Helpful Positive Review Spikes tactical Adjustable low-pro gas block by Benja, October 23, 2018
I'll Be honest - I haven't installed this on my rifle build yet so I might see if I can do a follow up review, but I can tell you from just seeing/handling the part that it is built with the utmost quality. This "Spikes" gas block is actually just a ...
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2/6 found this helpful
Read All 17 Reviews
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Product Info for Spikes Tactical Adjustable Low Pro Rifle Gas Block

The Superlative Arms patented Bleed Off, direct impingement, gas block for the AR15 platform adjusts the gas flow by bleeding the gas out of the block instead of restricting the flow like conventional adjustable blocks. Results:image

The pressure used in the block is reduced only to the amount required to drive the bolt carrier. The remaining gas / pressure are bled out of the block allowing the system to run much cleaner and cooler.

Reduction of felt recoil.

Patent pending adjustment detent is located outside of the block and therefore no contamination.

The gas adjustment screw does not restrict the gas flow; therefore there is no erosion or seizing of the screw / no loss of detent due to carbon build up. Although it is removable, we have added a safety mechanism, which stops you from unintentionally backing the screw all the way out. When using SBR's and / or suppressors the bleed off port allows the excessive pressure to be exhausted out of the block reducing blow back.

Please note that a roll pin is not included.

Specifications for Spikes Tactical Adjustable Low Pro Rifle Gas Block:

Manufacturer: Spikes Tactical
Coating: Melonite, QPQ
Fabric/Material: 416 Stainless Steel
Gun Model: AR-15
Weight: 1.7 oz
Additional Features: Adjustable
Condition: New
Country of Origin: USA

Package Contents:

  • Spikes Tactical Adjustable Low Pro Rifle Gas Block, 2A8-RGB-ALPGB

Please note that a roll pin is not included.

Spikes Tactical Adjustable Low Pro Rifle Gas Block Orderable Models

List of Orderable Models

Spikes Tactical Gas Block .750 Low Pro - Adjustable, SUGB170 , MPN: SUGB170 , UPC: 815648021429 , Code: 2A8-RGB-ALPGB-SUGB170
Spikes Tactical Gas Block .625 Low Pro - Adjustable, SUGB160 , MPN: SUGB160 , UPC: 815648021412 , Code: 2A8-RGB-ALPGB-SUGB160

Spikes Tactical Adjustable Low Pro Rifle Gas Block Unavailable & Discontinued Models

List of Unorderable Models

USED, Spikes Tactical Gas Block .750 Low Pro - Adjustable, SUGB170 , MPN: SUGB170-EDEMO , Code: 2A8-RGB-ALPGB-SUGB170-EDEMO-RE-C
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