RUBBER CITY ARMORY
AR-15/M16 ADJUSTABLE GAS KEY

100015575

Description
Ratings (3)

The Rubber City Armory Adjustable Gas Key enhances performance of low mass and standard mass GI systems without unnecessary disassembly. Gas flow is adjusted and maintained at the carrier with 2 set screws, one to adjust gas flow and one to lock it in place. Made from Pre-Hardened 4140: 28-32RC with radiused corners reducing sharp edges. 2 mounting bolts included.

SPECS: Made from Pre-Hardened 4140: 28-32RC.

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Customer ratings for RUBBER CITY ARMORY ADJUSTABLE GAS KEY

Number of ratings: 3
From brownells.com: 3
Average rating: 4.3

seems to work as intended.... (03/04/2015)

I was skeptical about this but wanted to give it a try...overall I'm impressed. My pinned carbine's barrel came with an oversized gas port it seems and I was having all the signs of over gassing(case head swipe, 12-1PM ejection, harsher recoil, mid case dents, etc) on every type of ammo I tried. Installed the ADIGS and now I have no swiping, dents, recoil is softer and ejection is consistently at 4PM with all ammo I've tried. I am writing this after about 1000 rounds through it because I wanted to give an accurate review and see how it did, I really liked it! I have only adjusted it once and hasn't moved in the last 1k rounds. This is a good option for those with a pinned/welded barrel.

Great Idea. (09/04/2015)

Gas control screws had to be reset repeatedly.

Even with the set screw there were problems keeping it where I wanted it. Once it was adjusted the adjustment changed when you tightened the locking screw.

Excellent Product (31/07/2015)

I ordered this product for my suppressed 16" 300blk. The first time I ordered the product, it arrived with the bag cut (where the parts are) and a small piece of tape to cover it. I was missing one mounting bolt and all of the set screws. I returned it (Brownells made it right in a hurry) and received the replacement. This one had all of the pieces. The finish of the part is done well and is smooth to the touch. There aren't any instructions on how to install it but it is pretty straightforward. I thoroughly degreased the parts and placed a thin layer of red Loctite around the gas port and set the key in place. I also used a small amount of red Loctite on the mounting screws and torqued them to 58 in/lbs. I then put a quick shot of air through the key to make sure the hole was clear and let it set up for 24 hours. I did not stake it, as I was not sure if I was going to like it.

After the Loctite was good and set up, I took the gun out to the range to see how it worked. I am shooting 110gr Varmageddons with 19.5gr of W296, at about 2400 ft/s (Carbine gas) and an AAC Cyclone suppressor. I started with the set screw all the way in the closed position and placed one round in the magazine and fired. To my surprise the case was ejected at about 3-4 o'clock and about 5 feet away. The bolt did not lock back. I tried this several more times with the same result so it doesn't appear that one would be able to shut the gas all the way with a supersonic load. Recoil was drastically reduced from how the gun ran previous, which would slam the bolt back hard and throw brass directly behind me and over 20 feet away.

I backed out the adjustment screw 1/2 a turn and repeated. Same ejection and recoil, no bolt lock back. Another 1/2 turn, and the bolt locked back. I backed the screw out another 1/4 turn and put the locking screw in on top of it (no Loctite). I then fired the weapon approximately 30 times and checked the set screws. There was 0 movement but time will tell whether I will need to put some blue Loctite on or not.

Overall this is a good product. It is easy to adjust and comes with one extra set screw and one adjustment wrench. It does come with a little Rubber City Armory logo decal. It is very cheap looking but that is not really a big deal.

Now some may be concerned with where the gas goes. It goes in the receiver as my gun was a little dirtier than normal after the small amount of firing that I did. This did not affect how the rifle ran, as I had no malfunctions. Now I will go ahead and get those screws staked in.

Read 3 more ratings on brownells.com

84.9 84.9 1 GBP

Product no.: 100015575
RUBBER CITY ARMORY ADJUSTABLE GAS KEY
Mfr Part: 1AD-GKY The Rubber City Armory Adjustable Gas Key enhances performance of low mass and standard mass GI systems without unnecessary disassembly. Gas flow is adjusted and maintained at the carrier with 2 set screws, one to adjust gas flow and one to lock it in place. Made from Pre-Hardened 4140: 28-32RC with radiused corners reducing sharp edges. 2 mounting bolts included.

84.9 GBP 2 £84.90 *

Is a 'Call to order' product.

Delivery time approx. 7-14 days.
2 pcs. in the USA warehouse

Specs: Make: AR-15

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Is a 'Call to order' product.

Top takeaways

The Rubber City Armory Adjustable Gas Key allows for easy adjustment of gas flow in AR-15/M16 systems without disassembly.
Included with the gas key are 2 set screws for adjusting and securing gas flow, and 2 mounting bolts for installation.
Constructed from Pre-Hardened 4140 steel with a hardness of 28-32RC, it features radiused corners to minimize sharp edges.