Author Topic: a lrho upper that may work for the AR45 from new frontier  (Read 152 times)

Offline BlackOrchid

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a lrho upper that may work for the AR45 from new frontier
« on: December 09, 2016, 08:53:03 PM »
Hello  :)

Found this:
http://www.joeboboutfitters.com/Spartan_9MM_45ACP_Billet_AR15_Upper_Receiver_w_LR_p/jb-9-lrbho.htm

Its from new frontier.
the lrho is built into the upper to hold the bolt back on glock and Colt 9mm and 45acp. Therefore, I am asking those who build if this could be made to work with the AR45 lower and the mags we use? Seems that some clever person should be able to make it work!

Comes in side charging too ;) ;D 8)
http://www.joeboboutfitters.com/Spartan_9MM_45ACP_Non_Reciprocating_Side_Charge_Bi_p/jb-9-non-recip-lrbho.htm

and manu direct:
https://newfrontierarmory.com/shop/side-charging-ar-9-stripped-billet-upper-with-lrbho/

And now a pretty fun ar45 pic that you may not have seen (but probably have):

incase the pic did not upload, here is the link, just scroll down:
http://www.arizonashooting.com/v3/viewtopic.php?f=39&t=137133

*can't upload image for some reason, probably my end... no worries.
« Last Edit: December 09, 2016, 08:53:58 PM by BlackOrchid »

Offline BlackOrchid

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Re: a lrho upper that may work for the AR45 from new frontier
« Reply #1 on: December 09, 2016, 08:57:03 PM »
here is vid of how it works (looks adjustable)
https://www.youtube.com/watch?v=cBg-uWGeBOA

most relevant part starts at 7m20s

Let me know if anyone here has tried this with their ar45 lower.

Thanks

Offline Mad Machinist

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Re: a lrho upper that may work for the AR45 from new frontier
« Reply #2 on: December 10, 2016, 04:00:59 PM »
No...the issue with grease gun magazines is the lack of movement by the follower after the last round is fed......you need about 1/8 of an inch minimum of travel to actuate the bolt catch....it will require a redesign of the mag follower....and a way to mass produce them. I worked out a simple mechanism quite some time ago...just not enough of the afore mentioned follower movement to make it reliable.