Reddit mentions of Lethal-Eye Glock Barrel Thread Protector 1/2x28 Black 9mm 357 Sig 11mm Length, fits Lone Wolf and Other Threaded Barrels ====

I used a coupon code for brownells for their $30 off. I used a coupon code for midway for $15 off. Midway parts came out to $93.23 and Brownells at the $271. 3D printed an RMR cover. Someone made one specifically for the brownells rmr slide. I had a couple FTF at first but then it shot nicely after that. May have been this gen 2 glock 19 mag I was using I don't know. Pretty happy with it.. will get an RMR at some point. I cheaped out and used all of the frame internals from a Gen 2 Glock 19. Works fine so far.

Thingiverse Brownells RMR Slide Cover Plate ($FREE99)

Lethal-Eye Glock Barrel Thread Protector 1/2x28 Black ($6.99)

Brownells RMR Slide and Polymer 80 Glock 19 Frame kit ($271)

BCA Glock 19 9mm Barrel - THREADED ($59.99)

Glock 19 Slide Parts Kit ($79.99)

Glock Front Sight Screw ($2.99)

Glock Locking Block Pin ($2.99)

Glock Front Sight ($2.99)

Glock Rear Sight ($5.79)

$7 muzzle attachment

https://www.amazon.com/Protector-threaded-barrels-LIFETIME-WARRANTY/dp/B00LA6TQMG/ref=sr_1_1?ie=UTF8&qid=1473366593&sr=8-1&keywords=thread+protector+1%2F2+28

I can't help you with an OEM, but I can tell you I lose those things pretty frequently. I just buy these for $7 off Amazon and keep them in the gun room just in case.

No but i just got one of these off amazon for 7 bucks, works great.

Amazon for $6 thread protectors pack of 2.

Edit: looks like price is $6.99 now.

Lethal-Eye Glock Barrel Thread Protector 1/2x28 Black 9mm 357 Sig 11mm Length, fits Lone Wolf and Other Threaded Barrels