Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Adams Arms P Series Micro Block Carbine Length Piston Kit
Currently Unavailable View Product
Compare (0)
Most Helpful Positive Review It's a short stroke piston kit ?
This is my third Adams Arms kit i purchased. I'm not sure why i continue to buy them. They do keep the firearm cleaner. They add a certain level of confidence that you can send 100s of rounds down range all day without loading up the rifle full of spent gas and carbon. They sure do work nicely. If y...
Read More...
Most Helpful Negative Review High quality, hard to find compatible handgaurds/barrel nuts
The piston kit is high quality. I choose to rate this one star do to the difficulty in finding compatible handgaurds. The support website lists some, but is very out dated. In the end I had to select a non-free float handgaurd. Once I was able to get the kit installed it worked great, and I have not...
Read More...
Show
Sort by
Filter by

Runs cooler

by Dragonw4g, Verified Owner from WA, United States Written on January 22, 2022
I slapped this in an aero upper and barrel. Samson Evolution series guards perfectly house the system. Then I put a JP enhanced bolt and trybe firing pin in. To top it off attatched my Banish 30 suppressor. Fires like a champ and a joy to shoot. Noticed suppressor and firearm didnt heat up as quickly. System was designed around mil spec barrel nut, just keep that in mind. Google compatible foregrips is what I did.
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Easy way to convert gas systems

by Tim, from OK, United States Written on September 21, 2020
Installation was super easy, though be aware that the gas block is high profile and won’t fit under some hand guards. Installed on my Aero precision M4E1 receiver (with fitting). Fits nicely with the enhanced m4 handguard. Would recommend for someone planning on running a can, able to adjust gas block and prevent over gassing and wear on your firearm. The customer service at Adams Arms can give you info on installation.
Pros:
  • Easy to install
Cons:
  • Requires minor fitting or special handguards
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

AA P Piston Kit

by Marky, Verified Owner from PA, United States Written on August 7, 2018
Nice piece to add to weapon to make it cleaner. It would have been nice if the bolt carrier was a complete one with the entire assembly to save work and time of transferring parts from existing BCG and removing gas rings. Lighter front gun from older series kits.
Pros:
  • None
Cons:
  • have to remove parts from other BCG
Would recommend: Yes
Was it helpful to you? Yes | No

Great Piston System

by Aj, from NC, United States Written on January 8, 2018
Adams Arms P Series Piston lives up to its reputation. Reliable, clean, low profile great materials. Really love the system. Definitely going to be ordering a couple more. Only problem I had was with my other orders through optics planet. I ordered two other parts that were in stock and I ended up having to wait an extra 2 weeks for them to arrive. Other than that OpticsPlanet has great prices and I will be ordering from here again
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?