338 LM unfinished lower receiver

winddinger

Private
Minuteman
Jan 13, 2021
3
0
CT
After building many AR-15s and AR-10s I would like to build a semi-auto 338 LM.
I am not looking for opinions here just hoping for some help.
I have been looking for an unfinished lower or CNC blueprints and have not had any luck. If anyone knows where to get either please let me know. It would be much appreciated.

Thank you!
 

THEIS

Hi, Sincerely
Commercial Supporter
PX Member
Minuteman
  • Nov 27, 2017
    6,136
    20,440
    Enon Louisiana
    hoplitearms.com
    Hi,

    And what upper are you looking to attach?
    Reason I ask is that there are NO "standards" for lowers or uppers when it comes to big magnums.
    Also most of the big magnum "AR" types will not sell just an upper to begin with due to it needs their proprietary lower to function.

    Sincerely,
    Theis
     

    winddinger

    Private
    Minuteman
    Jan 13, 2021
    3
    0
    CT
    Hi,

    And what upper are you looking to attach?
    Reason I ask is that there are NO "standards" for lowers or uppers when it comes to big magnums.
    Also most of the big magnum "AR" types will not sell just an upper to begin with due to it needs their proprietary lower to function.

    Sincerely,
    Theis
    Hello Theis,

    That is a great question. I only just started to look for uppers and I have not had any of the manufacturers I looked into respond. No point in machining out a lower if I cannot get the upper. Maybe someone out there has an answer?? Thanks for responding to my thread!!!
     

    UpSideDown

    Gunny Sergeant
    PX Member
    Minuteman
    Sep 24, 2019
    813
    724
    Does.... anyone... make a .338LM AR variant? I mean I'm picturing the size of a .338LM sitting on top of an AR lower. You know maybe if you take a 25rd SR-25 mag and you load one round vertically in it...