Adjustable gas block that fits under a handgaurd

[gunmutt]

I am looking at the sampson evo 15" rail but I wish to have a adjustable gas block. Does anyone recommend a low profile brand?

[GLSHOOTER]

Mar 18, 2012 13:46:43 GMT -8 gunmutt said:

I am looking at the sampson evo 15" rail but I wish to have a adjustable gas block. Does anyone recommend a low profile brand?

I haven't seen any adjustables that fit under a hand guard. Since you have to adjust them from the side you will have to make sure there is an access hole available or make one as the HG is fitted.

Greg

[Deleted]

Mar 18, 2012 13:46:43 GMT -8 gunmutt said:

I am looking at the sampson evo 15" rail but I wish to have a adjustable gas block. Does anyone recommend a low profile brand?

JP or Kies will fit under the handgaurd. You will have to drill an access hole to get to the adjustment screw.

[chinaheart]

I know this may be too late, but you can always try a standard low profile gas block and use an adjsutable gas tube perhaps.

[Deleted]

May 25, 2012 0:10:30 GMT -8 chinaheart said:

I know this may be too late, but you can always try a standard low profile gas block and use an adjsutable gas tube perhaps.

If it is under the handgaurd you will still have to have an access hole for adjustment.

[joebush]

www.spikestactical.com/new/z/spikes-tactical-enhanced-adjustable-micro-gas-block-750-wset-screw-p-738.html

See if this is what you are looking for.

Joe

[Brandon Sneed]

Great choice there.

[dengoose]

SLR rifle works has one they claim fits under all ff handguards & adjusts from the front. Might be a bold claim on the fitment but like the fact it has a gas shut-off ability
slrrifleworks.com/products/da7-black-rifle-gas-management-system

[ballardw]

And another that adjusts from the muzzle end:
www.shootingillustrated.com/index.php/23788/syrac-ordnance-adjustable-low-pro-gas-block/

I have one with a Samson Evo 12.7 inch and it look like it would fit under longer hang guard. The adjustment wrenches are also long enough to adjust under the longer tube.

[Deleted]

Feb 2, 2013 8:47:45 GMT -8 ballardw said:

And another that adjusts from the muzzle end:
www.shootingillustrated.com/index.php/23788/syrac-ordnance-adjustable-low-pro-gas-block/

I have one with a Samson Evo 12.7 inch and it look like it would fit under longer hang guard. The adjustment wrenches are also long enough to adjust under the longer tube.

Look at how the gas blocks in the last three links are built!! They are NOT a low profile gas block. The block has to be machined to fit both the gas tube and the adjustment set screw in parallel with each other and still have enough materiel let to make it structurally sound. A set screw from the side is the only way to get a true low profile.

[deadnuts]

I have two of the Superlative Arms adjustable gas blocks and they fit very well under the forearm, they click adjust from the from front so no set screws are used plus the come with an extra long hex tool to make adjustments with. One on a 25-45 Sharps and the other is on an 264 LBC, both black hole barrels, and they've functioned flawlessly. Hope this helps, also I have other adj low profile gas blocks from other manufactures that require drilling access holes and one that requires the forearm to be removed because the gas adjustment screw faces the reciever. My next two builds I'm going to try the adjustable gas key so I want have to fool with anything forward of the reciever.  Good luck on your choice. 

[onthedivide]

I believe that the Superlative Arms gas block adjusts pressure by venting the gas compared to restricting the gas flow. Does the relieving pressure at the gas block slow the velocity at the muzzle?