Spectre Ballistics Light Practical Carbine - NR Receiver Set

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Whether the AR gets taken away from people or not, I still see this receiver as a very useful development. It is nice to have a rifle so customizable, with such easy barrel and chambering changes, and available for a variety of cartridges. I would love one of these in 6x45 and another in 308 is such a thing became possible at a modest price. Or even a 308 receiver also accepting a 243 barrel.

I realize the initial offering is for the 223 based cartridge and that’s an awesome start.
 

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The prototype is coming along well.
 
When I compare the milled prototype with my and other AR’s, the magwell base is @the base of the trigger guard. Just curious, are regular AR15 mags going to seat properly since the magwell looks shorter? Or is the BCG higher up than a normal AR15?
 
When I compare the milled prototype with my and other AR’s, the magwell base is @the base of the trigger guard. Just curious, are regular AR15 mags going to seat properly since the magwell looks shorter? Or is the BCG higher up than a normal AR15?

Our mag well is based roughly on the AR180, not the AR15. We opted for this design to simplify manufacturing. Magazines seat just fine.
 
Love the initiative, love the design.

Hate that it could be used against us "See, they can still have non scary guns, we just want the scary ones"... for now.
 
Rearward thrust goes into the recesses on the barrel extension, which are perpendicular to the direction of thrust. The cam in the bolt carrier doesn't start unlocking the bolt until the bolt carrier has been moved a good deal rearwards. Off the top of my head, I'm pretty sure the firing pin on an AR-pattern rifle can't even protrude through the bolt face unless the locking lugs are fully engaged.

Obviously most people understand this ^... but what keeps the bolt carrier itself from moving ? That is the source of the confusion here..
 
Obviously most people understand this ^... but what keeps the bolt carrier itself from moving ? That is the source of the confusion here..

Spring detent in the upper interacts with the carrier. It's not really needed, but will help prevent you from bumping the bolt our of battery. When firing nothing is acting on the carrier, so it's not going to open.
 
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