Picking the right lower receiver to start the PCC (Pistol Caliber Carbine) is the foundation to which the rest of the gun will follow. Since the lower receiver is the serialized part and considered to be the gun by the ATF, they must be transferred through a local FFL dealer with the appropriate paperwork. From the earlier article Pistol Caliber Carbine Pre-Review Thoughts, we are building a rifle/carbine based on the AR platform to utilize Glock magazines. The lower receiver is what gives us the Glock mag capability.
Here is a short list of the companies that make a Glock mag AR lower receiver that I’m aware of:
- Angstadt Arms
- New Frontier Armory
- Palmetto State Armory
- Joe Bob Outfitters Spartan
- Quarter Circle 10
- JP Enterprises
- Gun Point/AVguns
This review will consist of an example from New Frontier Armory (NFA), Palmetto State Armory (PSA), and JP Enterprises. None of these lowers have the last round bolt hold open (LRBHO) feature, if this is a absolute must have for you then make sure you pick the right lower or upper receiver to give you that feature. NFA (also Joe Bob Outfitters) makes an upper that has a LRBHO feature, while most other companies decide to build it into the lower like Angstadt, PSA, QC10, & Gun Point.
The video covers a little more information for you, but I’ll highlight the important items. All 3 lower receivers were well made and high quality, even the PSA as a blem was excellent.
- New Frontier Armory C-9: $170 (Joe Bob Spartan is $150, same lower)
- Palmetto State Armory Billet Glock: $170 (This is the high price as they run specials on these all the time when in stock)
- JP GMR-13: $400
All 3 lowers use set screws for the bolt catch and the rear detent pin so putting these together was simple. The old hammer and punch, usually followed by some touch up paint wasn’t needed.
Were you expecting more? So was I, all the lowers reviewed were exactly what they were supposed to be. I do prefer the appointments on the JP a little more, it has the mag stop milled into the lower and a more rigid ejector. With NFA & PSA the ejector is also the mag stop however it’s adjustable and held in place with two set screws. I have seen this ejector come loose during a local competition, luckily the shooter was able to borrow my rifle to finish the match. I’ve also had this ejector bind on the bolt and needed to be tuned out before it would operate smoothly. So the JP at twice the price is a lot of coin, but you get a product that is worry free and works perfectly. The lower receiver basically just holds the trigger and mag in place, so as long as it does that well then that’s all it needs to do.
Now to show some numbers from other popular lowers (these have the LRBHO feature):
- Angstadt Arms: $280
- Quarter Circle 10: $285
- Gun Point/AVguns: $275
- Palmetto State Armory Forged LRBHO: $130 (price changes frequently by a little and much cheaper than those above)
Next up on the PCC Project : Build Sheet and Cost comparison