Mid Length Distributor Piston System- Along with our piston system and its parts this package Contains Adams Arms 1 piece bolt carrier, handguards and handguard cap.

The Adams Arms Gas Piston System is an end user installed after-market product for Mil-Spec ARs. 

 

FITS: on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits.    The Carbine version will work on barrel lengths from 16" to 18" that has an existing carbine gas system.    OTHER ADAM ARMS PRODUCTS:   Carbine Length Distributor System     Rifle Distributor System

  

FAQ

 

How do I know which length system to buy?                                           Our system comes in 4 lengths: pistol, carbine, midlength, and rifle. The most common listed measurements for these are: pistol – 4”, carbine – 7”, midlength – 9”, and rifle – 12”. These measurements can be found by measuring the distance between the front of the upper receiver and the shoulder where the gas block sits. These measurements are not exact but are rounded to the nearest inch for ease of terminology and for quad rail compatibilty. You can get a more accurate measurement by measuring the barrel extention in the upper receiver and the back of the gas block, where the shoulder starts on the barrel. Click here to for an illustration of exact measurements.

 

 

What handguards/rails can I use with this system?

 

This is the list of handguards we currently know will work with our system without any modifications, this list will be updated as more handguards are discovered to work with our system:

1. The Free Floating or Drop In rails available on our website manufactured by Samson specifically for us
2. Daniel Defense Omega Rails
3. Daniel Defense Lite Rails
4. Daniel Defense 9.5 FSP Lite
5. Ergo Grip AR Z Float
6. Ergo Grip AR Z Rail
7. Midwest Industries Gas Piston Carbine Two Piece Free Float Forearm
8. Arms #50 Bi-Level S.I.R. System
9. Troy Industries MRF-DI
10. PRI Gen III Delta Carbon Fiber Forearm
11. The modified M4 style handguards provided with our standard system

 

Will my barrel work with this system?

 

Our system will work with any barrel that has a shoulder diameter (where the gas block sits) of .750” or ¾”. It also requires a shoulder length of 1” (preferably 2”) toward the front of the barrel.

 

Visit Adam Arms' website to find more Answers to other Frequently Asked Questions