Walli

Is the issue the holster body or the locking mechanism?

WxGuy, thanks for the picture! Looks really good!

I am trying to figure out who is already offering holsters for the Walter PDP Steel Frame Match / 4.5". So far ... Daraholsters Redhilltactical Bigdogsteel Who did I miss?

Milling the slide for an optic in production optics seems to be legal now: 19.2 Aftermarket open and optical/electronic sights (see Rules 5.1.3.1 and 5.1.3.2) and mounting plates are permitted, provided their installation and/or adjustment requires no alteration to the handgun other than the milling of the slide in order to facilitate the installation of an optical/electronic sight. Replacement of springs in production and production optics in still not very clear: 19.4 Aftermarket springs are permitted, provided they are in the same configuration as original. For a Glock Gen 5 the DPM spring might be of the "same configuration". Or it might not... Canik SFX Rival S is still not on the production division list.

The handguard is partially polymer ... what else?

MeanArms Compatible with both milspec AR-15 and dedicated pistol-magazine lower receivers MeanArms AR15.com For the lower receiver, because of the Endomag, we started out with milspec AR-15 lowers (and this is how most of our testing was conducted, including full auto). The system is also compatible with dedicated pistol magazine lower receivers. The only caveat is that most of these receivers include a stationary ejector in the lower - this ejector will need to be removed for the Bearing Delay Upper. I wish they would offer a list of lowers that they tested.

Uronen Precision It is out of stock and has been so for quite some time.

Aren’t the rollers for changing headspace and the locking-pieces for changing the resistance it takes to open the action?

Contact Taccom and ask them what lower they do recommend. Just to play it safe.

Start with a Taccom Upper and whatever lower they recommend. Then go from there whatever your needs and budget dictates. taccom signature upper

What safety are you using?

Hoping for a counter offer from SIG?

The problem might be the lower and not the upper. Do you have access to a different lower?

Double Alpha PCC Mag Pouch

Holosun SCS Window Size 0.58x0.77 Holosun HS 507C Window Size 0.63x0.91 I am not sure that I want the smaller window.