Name: Adams Arms Standard Picatinny Block Piston Kit
SKU: ADA-GCK-SPPKPL
Rating: 4.2 (27 reviews)

Image of USED Adams Arms Piston Kit, Standard Picatinny Block, Pistol Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03104, EDEMO2, Condition Fair, Missing Item

USED Adams Arms Piston Kit, Standard Picatinny Block, Pistol Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03104, EDEMO2, Condition Fair, Missing Item

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Mid Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03110, EDEMO1

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Rifle Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03113, EDEMO1

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Pistol Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03104, EDEMO1

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Pistol Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03104, EDEMO3

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Mid Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03110, EDEMO1

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Rifle Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03113, EDEMO1

EDEMO Adams Arms Piston Kit, Standard Picatinny Block, Pistol Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03104, EDEMO1

Adams Arms Piston Kit, Standard Picatinny Block, Rifle Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03113

Adams Arms Standard Picatinny Piston Kit, Black, Mid Length, FGAA-03110

Adams Arms Piston Kit, Standard Picatinny Block, Mid Length, Standard BCG/.750 Gas Block/Drive Rod, Black, FGAA-03110

Product Videos

Adams Arms Piston System 01:27

Adams Arms Piston VS DI 03:16

Questions & Answers

Customer Reviews

Helpful Positive Review

It's custom. by Wes, Verified Owner, December 1, 2021

The AR 15 was not designed or intended to run a piston. Which means every AR built with one is custom. A custom build will come with custom problems. Hand guard selection is tricky. Look on the Adams website for a full list of compatible handguards. ...
Read More...

5/5 found this helpful

Helpful Positive Review

Great piston setup option by Will Smith, Verified Owner, May 1, 2018

The Adams Arms kits are great for building piston rifles or for retrofitting to a piston setup. These aren't for the faint hearted though and do require some work to install them. If you're unsure about doing it, it's best to find someone who's compe...
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4/4 found this helpful

Helpful Positive Review

Pistol piston kit by RBWVETDOC, March 5, 2018

Fits like a glove. No more gas in the face when shooting with a suppressor. Easy instal and very easy to clean. Keeps bolt carrier group ridiculously clean. Highly recommended for anyone wanting to build a pistol AR with a piston.

1/1 found this helpful

Helpful Positive Review

Quality you expect by Steve W., January 11, 2019

All of the Adam's arms stuff I've worked with is solid quality stuff. It's not the biggest name, not super fancy, but its good. I've done two piston builds and if you do your job putting it together and use quality components it will run all day.

2/2 found this helpful

Helpful Positive Review

10.5” pistol install by Quade, February 22, 2020

I run several Adams Arms piston kits and this one is no different. After some buffer and spring tuning, it runs flawlessly. I use some custom bushing on the rod to achieve the correct final gap of the operating rod with different barrel nuts. They ar...
Read More...

4/4 found this helpful

Helpful Positive Review

Will definitely buy again! by Lonnie, April 15, 2020

Works perfectly! I do recommend using the written instructions on the Adams Arms website, in conjunction with their installation video. The video leaves out some details. Also, you’ll need to separately purchase the modified handguard cap if using ha...
Read More...

2/2 found this helpful

Read All 27 Reviews

Color:: Black
Gas System Length:: Pistol Length
Caliber:: .223 Remington, 5.56x45mm NATO
Included Accessories:: .750 Picatinny Gas Block, Bolt Spring, Drive Rod with Spring, Gas Plug, Installation Instruction Guide, One-Piece Bolt Carrier
Condition:: Factory DEMO
Condition Quality:: Fair
Condition Details:: Missing Item

Code: ADA-GCK-SPPKPL-FGAA-03104-EDEMO-MI-D

MPN: FGAA-03104-EDEMO2

Product No Longer Available

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Product Info for Adams Arms Standard Picatinny Block Piston Kit

The Adams Arms Retro-Fit Piston Drive System uses the same gas port on the barrel to work the action of our inverted piston. Instead of directing the gases into the receiver, they go into a gas plug and drive rod sleeve invented by Adams Arms. The gases are contained inside the drive rod sleeve and push the bolt carrier rearward using the gas pressure to cycle the action.

Adams Arms proprietary operating systems mechanically actuate the bolt carrier external of the receiver. This keeps the internal receiver and all the critical moving parts clean and free from heat and carbon build up.

Here are some of the main differences when using the Adams Arms Operating System:

Short Stroke Free Floating Piston System
Self Cleaning
Carbon and gases are expelled forward, away from the operator
Bolt Carrier Group and other critical components remain cool and clean
Corrosive resistant coating processes
Harmonics are not transferred into the barrel
Adjustable gas settings for various applications
Doesn't vent direct to atmospheric pressure; this eliminates flash signature and supersonic crack which is optimal for night vision and suppressed fire

Please note that the Receiving Bushing and Installation Dowell are no longer included.

Features of Adams Arms Standard Picatinny Block Piston Kit:

To select the correct length kit, use the following measurements:

Pistol: 4.846" from barrel extension to shoulder
Carbine: 7.866" from barrel extension to shoulder
Mid: 9.866" from barrel extension to shoulder
Rifle: 13.241" from barrel extension to shoulder

Please note that the Receiving Bushing and Installation Dowell are no longer included.

Package Contents:

Adams Arms Standard Picatinny Piston Kit

Patented One-Piece Bolt Carrier
.750" Picatinny Gas Block with 3 settings (full gas for standard fire, half gas for suppressed, no gas for single shot)
Gas Plug
Bolt Spring
Installation Instruction Card

Please note that the Receiving Bushing and Installation Dowell are no longer included.

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