YHM® 9mm Glock® Compatible Lower and Bolt Carrier
YHM G9 model lower receiver is machined from a solid billet of 7075-T6 aluminum and hard coat anodized. It accepts MIl-Spec lower parts and triggers. Designed to accept 9mm Glock magazines. This receiver has a solid last round bolt hold open feature machined in. It also includes a built in Tension Screw to reduce upper receiver movement.
Link:
https://yhm.net/yhm-155.html
The G9 Bolt carrier is designed to work with Glock 9mm magazines and is machined from Premium 4340 Steel. The outside diameter is pre-hardened then precision ground and machined for improved tolerances. A long duration salt bath nitride finish is applied for a long service life and superior corrosion resistance. This bolt carrier is not compatible with our YHM-135 or YHM-150.
Link:
https://yhm.net/yhm-bcbt-g9.html