Matrix 7.62 receiver parts compatibility

[Freedom Birds]

Takedown pins /LPKs compatible with Matrix 7.62 lower?  The pins used to be proprietary but now apparently “any AR10 parts kit” will work. I find this hard to believe. Most sites who sell the current 7.62 receiver set refer to Armalite A parts, which are mostly discontinued everywhere but Armalite. 

[jtallen83]

On 9/5/2020 at 3:35 PM, Freedom Birds said:

Takedown pins /LPKs compatible with Matrix 7.62 lower?

Which one? The second version I got from Primary Arms a couple years back used an Aero M5 LPK. You may be able to dig up measurements for the older version in the Matrix section here;

https://forum.308ar.com/forum/126-matrix-aerospace/

[98Z5V]

Matrix Aerospace made a couple transitions.  At first, their receivers were Armalite Cut, and Armalite barrel nut threading.  They also made Armalite Cut - but with DPMS LR-308 barrel nut threading - basically, a DPMS LR-308-based receiver set - but with the Armalite Cut on the receivers.

Eventually, they moved to all DPMS LR-308 based design, and all DPMS-based parts.

Pics of the receivers that you HAVE, will help alot here - and help you identify what you have, in your hands right now.  You're working with a GREAT receiver set - just post pics of what you have right now, so we can guide you through what you need to order to finish it. 

My Armalite Cut, DPMS threaded receivers  - those took special-length pivot and takedown pins... 

Edited September 9, 2020 by 98Z5V