The SA9 Billet Lower is machined from aluminum. Along with its over-sized mag release, the lower features massive magwell ramps to aid in reloading; a feature not found on any other PCC lower. We have 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 100% configuration and ARE considered firearms. They can NOT ship directly to the customer and must be shipped to an FFL.
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 lowers also works with +10 and +20 extensions. As with all Spear lowers, the design is completely roll pin free for ease of assembly.
