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Curious if anyone has any experience using an Aero Precision complete upper on a milled out 80% "AR-9" lower with LRBHO for Glock mags? Was it successful for you? Figured I'd ask the brain trust here first.
This is a complete FM-9 PISTOL (upper and lower) as purchased from Brownell's. This pistol has been reliable over the 510 rounds I've shot. I've got a shoulder issue that makes it painful to mount and operate "rifles" (this is a PISTOL, but it's worked like a rifle), so this one has to go...
Upper comes with (2) BCM Keymod QD Swivel connectors and a set of Magpul MBUS flip up sights.
Only place this upper is in stock is from CMMG $575
QD swivels $36
Catch 22 Bolt catch and S&W M&P 15-22 adapters will go with the (8) 25 round mags and (3) 10 round low pro mags. About $360...
This is a high end 9mm AR pistol build with a low round count. I put it together and ran about 250rds through it to prove function. With both steel and brass ammo it ran flawlessly without a single malf. This build incorporates a last round bolt hold open feature.
Upper and Lower - Spartan/Joe...
Built this upper for USPSA PCC works flawlessly on any glock lower that doesn't have LRBHO but adds that LRBHO (last round bolt hold open) feature in the upper.
Works on any lower PSA/spikes/ other lowers without LRBHO. Holosun Optic not included but can be for the right price.
Selling my Angstadt Arms Lower/ Aero Precision Upper AR45 Pistol with Last Round Bolt Hold Open. Comes with 2 x 25 Round Glock Mags with Kriss Extension. Just completed this build in November. Has 60 rounds through it, runs flawlessly. A very accurate and fun gun to shoot. On to the next build...
This was a nice project of mine to get the perfect side charging ar9 that didn't send a rod toward your face, and with last round bolt hold open capability. This thing runs even steel case ammo very reliably. It does get dirty very fast (but that is pretty much all AR9's). I've refinished the...