Hello everyone! Love PSA! Anyways i have a question. For a lower that comes “Non Last Round Bolt Hold Open” can this be changed?
Thank you in advance & i appreciate any help.
Tim
Well, if your lower is non-LRBHO, you could get an upper that has the LRBHO built into it instead? If you already have the upper and lower and neither has it, then you appear to be in need of more gun parts!
Is it a Glock pattern lower or are you running some sort of adapter?
This is a very good video I like to direct people too
Very easy to understand
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PSA PX-9 FORGED COMPLETE GLOCK®-STYLE MOE EPT LOWER
PSA GEN4 8" 9MM 1/10 NITRIDE 7" LIGHTWEIGHT M-LOK UPPER - WITH BCG & CH
I didn’t see anything about it in the upper.
Thank you for the video link.
I haven’t seen PSA AR-9 that takes Glock mags have LRBHO, not to say they don’t, just haven’t seen them.
I do know that Lead Star Arms has them and they are in stock usually(which is part of JJE) but I’ve never used these lower/uppers.
https://palmettostatearmory.com/lead-star-arms-lsa-9-pcc-ar-9-lower-receiver-black.html
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Yep, neither of those has LRBHO so you need to swap one out or live without it. I agree with JosPri, I don’t think I’ve seen a PSA 9mm AR platform with it?
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Yeah i was wondering about the upper. Thank you, i appreciate all the help. Oh well, PSA is like a second wife now and has my money already. 
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Aero EPC uppers have LRBHO and work with PSA 9mm lowers in my experience.
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Yeah but would that just be a stripped upper or does need to be a complete upper?
Either, really. I usually build my own stuff so my EPC uppers were purchased stripped and I used the parts I wanted. You can buy complete but I feel it’s less expensive to build. Then again, I have tons of spare parts around because I buy stuff when it’s cheap.
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Yeah I’m not quit there yet with spare parts. But I’m sure itll happen. I get what i call “builders block”. I go down the rabbit holes of parts but cant ever seem to be able to choose what i want.
Has anyone paired a PSA 9 upper with a Dedicated 9mm BCA blowback lower?
I tried the BCA uppers with side charging handles but they kept breaking off. Finally got a refund.
Welcome to the forum @mikedav123 
I think your experience with the upper should be a good indication as to whether or not you should try their other products.
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I was hung up on the LRBHO for a minute until I realized how many iconic weapons out there don’t have that feature, like the AK or MP5. Then I just started running it dry and reloading not worrying about the subsequent ‘click’.
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“First World Problems” 
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