Mar 21, 2019 · Trying to add Taccom extreme feed upper to fm9 lower. The activator on LRBHO comes in contact with feed ramp on barrel. Fm9 has video where LRBHO is removed by just pulling it off with no tools.

LRBHO; Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell designed specifically for 9mm Glock magazines. It gives them the freedom to build a truly unique …

Jun 4, 2020 · LRBHO doesnt function at all with Glock 33 or Magpul 27, as it doesn't move the latch far enough to engage the bolt cut. This is really odd as even when the top half is removed and the hammer is back, the mechanism won't engage.

Jan 25, 2020 · Before throwing in the towel, I could meet you at the range and you can try my factory CMMG RDB 9mm Glock lower that is designed to run that BCG/BBL and if it runs 100% with your upper then you definitely can't blame the upper.

Start your AR-9 build off right with the FM Products 9mm stripped lower receiver. Because the AR9 lower is machined directly from billet, it allows FM Products to add features like an integral trigger guard and a magwell designed specifically for 9mm Glock magazines.

Aug 26, 2022 · FM has the best LRBHO mechanism out of any I've seen. Primary Arms currently has this 5" FM-9 pistol in stock, 12% off with coupon code SAVE12. Add the brace you prefer and you're ready to go.

The FM9 lower receiver is described as featuring lrbho, without mention of needing a specific upper receiver or parts... What I have is a 9mm built on an Aero Epc-9 lower, which requires an Aero Epc-9 upper to achieve lrbho.

Foxtrot Mike Products Hybrid Polymer FM9 Complete AR9 lower receiver features a unique design made from polymer with aluminum inserts molded into it.

Oct 27, 2021 · I would vote for the LRBHO. Would you not want the same functionality as your AR15? Take a long look a Foxtrot Mike as well. They make a good product and have a very robust LRBHO.

Nov 25, 2023 · The biggest issue seems to be the FM9’s bolt is making contact with the bolt catch as it’s cycling? The Bottom of the BCG that contacts & catches the bolt catch to lock it back, shows damage & keeps developing a peened forward edge or burr.