SwedishMoose

Is there any concern over wearing the magazines down over time as a result?

Great write up. I've been looking at them hard the past few weeks but now even moreso. I'm assuming the mag release isn't metal?

Yeah that's how it was marketed as well. Just a fun whodunnit movie. If you're after another whodunnit, there's an old movie called The Brick that's like a noir high school whodunnit.

He used to do holsters but it took way too much of his time vs. the return on 3D printed stuff he's gotten into.

Well to be fair we weren't told where he was from, so they got the liberty to have fun with it. I don't know what accent he was going for but I digged it knowing he's British.

S P E E D H O L E S

Savior equipment is the best price:quality option imo. https://www.saviorequipment.com/collections/rifle-bags

I had one and the mount felt really fragile. Window definitely isn't as big as the Holosuns.

I'm going to assume that is the ask, since I just looked it up and AAO make a S&W mag lower. Not sure where the top engineering friend comes into play. Nordic Components has a dedicated lower system, and Stern Defense have a mag block adapter that fits for M&P magazines. https://nordiccomp.com/categories/nc-pcc-lower/ https://getstern.com/mag-admp9-40-p320/

I'm not sure you'll find PCC magwells for milspec AR-15 lowers. Magwells are usually made difficult to take on and off in order to keep consistent position for reloads, and the whole point of a mag adapter is to keep the lower versatile. You can imagine how they might not go together.

Just tried this with 3 layers of electrical tape at the top end. Seems to have done the trick, thanks.

There's a new podcast I've started listening to that's pretty good...Not sure if I'm allowed to link to other places but here it is: https://www.buzzsprout.com/846826/2735008-the-hit-factor-show-episode-3-what-to-expect-at-your-first-uspsa-match?play=true

Glock users have aftermarket support. Colt mag users have said in multiple areas that they feel colt mags feed better, but mag seating is more of an issue from what I've experienced. Plus colts have better aesthetics. Colt mags are pretty cheap as well.

DAA Racers have an insert for glock big sticks that make the mags go deeper. Coda have been iterated in here multiple times. I got some from LAG Tactical and they seem pretty solid, and can also be canted providing you have the attachment system that supports it.

AR9's are finicky beasts, and buying JP is the #1 way to ensure reliability for the most part. And in the grand scheme when comparing the overall price of building one with good parts, the prices are comparable. There's a local PCC M shooter who cleans house with a stock Ruger PCC.