Killflash Anti-Reflection Device for Sig Sauer Romeo-MSR Gen II Red Dot Style:Open Center - Magazine Compatibility: Works with

- Magazine Compatibility:  Works with Glock 20 / 21 / 29 / 30 / 40 / 41 magazines

Beretta Rx4 Storm

- Perfect Fit: Designed specifically for Colt and UZI 9mm magazines

- Perfect Fit: Designed specifically for GSG MP40 9mm magazines

It's easiest to push the nut fully into its slot and then thread the bolt in partially first

Killflash Anti-Reflection Device for Sig Sauer Romeo-MSR Gen II Red Dot Style:Open Center - Magazine Compatibility: Works withRomeo 5 Gen I and 5XDR version here v2 Update: I switched to PETG CF for better heat resistance and doubled the hex depth to prevent glare from more angles. Precise Fit: Friction fit killflash ARD tightly fits on the end of a Romeo 5 Gen II or Romeo MSR Gen II optic. This does not fit the Romeo 5 Gen I or 5XDR or Romeo MSR Gen I models. This will require some force to install. Notch: The ARD has a notch on the side for prying it off with a small