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AR15.COM
9/13/2026 10:50:25 PM EDT
All my threaded 9mm pistols have OEM 13.5 LH barrels on them. Does Glock make a OEM 13.5 LH threaded barrel for a Gen 5 G19 or should i give up and switch to RH thread?
9/14/2026 5:48:55 AM EDT
[#1]
The Gen 3 threaded barrels will work in the Gen 5.
WTB: Steel Bodied Surefire Trainer
9/14/2026 8:19:21 AM EDT
[Last Edit: dana][Edited] [#2]
Quote History
Originally Posted By Postal0311:
The Gen 3 threaded barrels will work in the Gen 5.
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Are you sure about that? I believe you. But why does glock list them as separate items?

Edit: a little google work shows you are probably right. Thanks.
9/14/2026 8:46:32 AM EDT
[#3]
Quote History
Originally Posted By dana:


Are you sure about that? I believe you. But why does glock list them as separate items?
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Because gen 5 has marksman rifling, otherwise 19 size guns are backwards compatible

Gen 5 17 barrels are not backwards compatible because they use the g19 lockup pattern
9/14/2026 10:03:28 AM EDT
[#4]
Originally Posted By dana:
All my threaded 9mm pistols have OEM 13.5 LH barrels on them. Does Glock make a OEM 13.5 LH threaded barrel for a Gen 5 G19 or should i give up and switch to RH thread?
View Quote



Yes they do make a LH for the 19.5. GlockStore has some in stock
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Superty.org
9/15/2026 7:51:18 AM EDT
[#5]
Quote History
Originally Posted By MFS1589:



Yes they do make a LH for the 19.5. GlockStore has some in stock
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Thank you. The Gen 5 are $100 more than the Gen 1-4. Is the marksman rifling the only difference between the two barrels?

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