AR9 Billet 9mm Lower 80% Glock Pattern

(19 customer reviews)


  • 80% complete billet 9mm lower
  • Works with all Glock pattern magazines
  • Includes threaded bolt catch pin
  • Oversized mag release
  • Massive magwell ramps
  • Designed to work with high capacity magazines!
  • Choose from 2 finishes
  • Ships with all propriety parts needed (Ejector, mag release)
  • Fits almost all billet and forged uppers!
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Our AR9 Billet Lower  is machined from aluminum in-house. Along with its over-sized mag release, the lower features massive magwell ramps to aid in reload; a feature not found on any other PCC lower.  ZRTS has tested with Glock, Pmag, and ETS magazines for complete reliability.  All of our 9mm lowers ship complete with mag release and ejector.

These lowers are in 80% configuration and are not considered firearms.  They can ship directly to customer.

They DO NOT have LRBHO as all AR9-Glock platforms have proven unreliable and inconsistent due to the heavy mass and spring rate.  The Glock follower and spring was not designed to hold back such a large reciprocating mass.  For competition and tactical use, it is better to be consistent so we have chosen to have a lower that never locks back on empty (similar to an MP5).

Our lower also works with +10 and +20 extensions.   As with all ZRTS lowers, the design is completely roll pin free for ease of assembly.

Lowers are available in mil-spec black anodize or tumbled, raw finish.


Flared magwell available here:


NOTE: We will NOT ship to NY , MA, MD & NJ. All orders placed will be cancelled and assessed a 10% cancellation fee. NO EXCEPTIONS  This is due to NJ & NY state suing 80% dealers


Additional information

Weight N/A

RAW, Black, Bead Blasted

19 reviews for AR9 Billet 9mm Lower 80% Glock Pattern

Based on 19 reviews
Showing 2 of 19 reviews (4 star). See all 19 reviews
  1. Daryl (verified owner)

    Verified reviewVerified review - view originalExternal link

    Has a lot of minor tool marks. Maybe this is normal for a billet lower. Otherwise it’s a very nice piece.

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  2. KAMERON M. (verified owner)

    Verified reviewVerified review - view originalExternal link

    the lower is great and very light but it does have a few marks from machining on the outside of the lower the mag release was rubbing on the bottom so I sanded it and now its fine overall I’m happy with it.

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