Posted: 12/19/2011 3:26:22 PM EDT
[Last Edit: Duffy][Edited]
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We'll keep updating this as more manufacturers make ready their 45 degree, and 45/90 compatible receivers.
The difference between a strictly 45 degree selector compatible receiver, and a 45/90 compatible receiver is the FIRE/pictogram position. A 45 degree only receiver's FIRE/pictogram engraving is close to 60 degrees, which allows the 45 degree's position indicator to point at it when the selector is set on FIRE. A 45/90 compatible receiver's FIRE/pictogram engraving is situated at 68 degrees, thereby allowing both the 45 and 90 degree selector to both point to its general direction when the selector is switched to FIRE. 45 degree compatible receiver: Accurate Armory, 45 degree only receiver (45/90 compatible receiver may be coming) 
45/90 compatible receiver: AR15.com billet receiver 
AXTS, A-DAC-F (forged) and AX556 (fully ambidextrous, billet) and AX762 (coming soon) receiver A-DAC-F 
AX556 
AX762 
Aero Precision Ambidextrous Lower Receiver, Gen 2 link 
Photos courtesy of AR15.com, Military Moron, Aero Precision, and Rainier Arms 
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Battle Arms Development
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
Rainier Arms now has a 45/90 compatible receivers as well 
Rainier Arms receiver 
And Legion Firearms Legion Link
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Battle Arms Development
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
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War Sport now joined the list of 45/90 compatible receivers
War Sport site 
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Battle Arms Development
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
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Aero Precision just announced its ambidextrous lower receiver, gen 2 link
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Battle Arms Development
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
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One more from Aero Precision without the PDQ Linkie
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Battle Arms Development
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
[email protected]
Improvidus, Apto quod Victum
http://battlearmsdevelopment.com
For LE/MIL, and firefighter discount, please email me at:
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Joe Bob Outfitter's Spartan Billet receiver
Linkie |
Battle Arms Development
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For LE/MIL, and firefighter discount, please email me at:
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Improvidus, Apto quod Victum
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For LE/MIL, and firefighter discount, please email me at:
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Midwest Industries billet receiver
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Link to MI receiver |
Battle Arms Development
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For LE/MIL, and firefighter discount, please email me at:
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Improvidus, Apto quod Victum
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Cross Machine Tool (CMT Tactical) CMT
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Battle Arms Development
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Originally Posted By Duffy:
Joe Bob Outfitter's Spartan Billet receiver
<a href="http://s75.photobucket.com/user/Duffypoo/media/JB-SPARTAN15-21_zpsae8e3bf5.jpg.html" target="_blank">http://i75.photobucket.com/albums/i314/Duffypoo/JB-SPARTAN15-21_zpsae8e3bf5.jpg</a> Linkie That lower, the Ferrara fire arms lower and the working mans army are all the exact same lower with different roll marks but they are all marked with the short throw markings. |
I need a couple of the old style clamps for troy folding sights.
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Yep, we know the manufacturer, they're in the same city as as
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San Tan Tactical
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Rainier Arms billet 308 (the first BAD-ASS-ST and BAD-CASS-ST compatible .308 receiver)
Linkie |
Battle Arms Development
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For LE/MIL, and firefighter discount, please email me at:
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Improvidus, Apto quod Victum
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Thank you
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Battle Arms Development
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For LE/MIL, and firefighter discount, please email me at:
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Improvidus, Apto quod Victum
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For LE/MIL, and firefighter discount, please email me at:
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Originally Posted By TheDevilYouLove: New Frontier Armory also has the notch to work with a SS. I put a BAD SS safety on my Spartan 9 Glock lower, and the SS is the coolest freaking thing I've seen in awhile. Great product, I'll be using them exclusively on my builds going forward. You're right, NFA also have compatible lowers. There are many more out there. We will compile a list soon. |
President, Battle Arms Development, Inc.
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www.BattleArmsDevelopment.com
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What about the billet Mega Arms lower? I have the Billet Non AMBI Mega Arms lower that's compatable with forged upper recivers in my case I have the new BCM BFH KMR upper and the Mega Arm billet lower . It fits like a glove with the BCM uppers . As I said Mega Arms makes lowers for Forged and billet uppers . The part number I have is GTR-3S http://www.megaarms.com/ar-15/lower-receivers/billet-lowers/gtr-3s/
Note: make sure when ordering the AMBI lower in billet you put AMBI behind your GTR -3S . There the same part number but if you don't say AMBI you'll get the none AMBI . I orderd mine threw a FFL dealer and I ask for AMBI but he didn't know to put AMBI after the GTR-3S and well I'll live . Only real difference is I don't have AMBI bolt catch and I had to use a roll pin ( drive pin) to hold the bolt catch vs when buying the AMBI lower it comes with a threaded Allen head small pin/bolt and it comes with a extended plunger for AMBI bolt catch assembly . Q: So is the MEGA ARMS GTR-3S ON THE LIST for the BAD CASS ST AMBI safety ??? Thanks and hope this helps future Mega Arms and BAD customers figure out what they need |