Need Best Price Aero M4E1 Lower

[Frontier Gear]

Edit - never mind - Primary has the Gen 2 X15. I like an oversized trigger guard for glove weather and am not crazy about the integrated bolt catch screw on my M5e1. (Don’t overtighten it! The bolt catch will rotate and interfere with loading mags. Plus it may result in unexpected bolt releases!)

Interesting. I've never had that problem with the bolt catch screw on those. It's good to be aware of though. Thanks