Adams Arms Drop-In Piston Conversion Kits For AR-15 Rifle Length
Contains our 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.
It will fit on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits. The Rifle version will work on barrel lengths from 18" to 24" that has an existing rifle gas system. See the FAQ section for the measurements of a rifle gas system.
Customer Ratings & Reviews
Had problems right out of the box with this product. It will not cycle the ammo on my 6.8 SPC. Had to call tech support and the guy on the other end made me feel stupid for asking the questions I did. I thought the opp rod was bent and he said it was the way installed it. He did not think that their product was defective. Had to send it in to have them look at it. Will post again and see if my opinion changes!
The best piston setup yet
I have a cmmg piston setup too, but this is by far the better design. And they have it in rifle length!!!