HOGRIDER Posted December 7, 2013 Share Posted December 7, 2013 Anyone using a Bar-Sto Semi Drop in in a Gen 4? Just fit one to my G17 and have a question concerning the G4 RSA.... Thanks! Link to comment Share on other sites More sharing options...
G17 Posted December 8, 2013 Share Posted December 8, 2013 I don't have one but is it regarding the crescent shape cutout spot that the rear of the RSA assembly sits in? I have a Gen 4 with a KKM barrel which obviously has the cutout for a gen 3, but i already had a gen 3 guide rod in the gun. So i can't tell you if i had any problem with it. Either get the a gen 3 rod with adapter, or try the DRSA that you have in the gun. If you have any problems then switch it over. Link to comment Share on other sites More sharing options...
JBP55 Posted December 9, 2013 Share Posted December 9, 2013 I have installed KKM conversion barrels in several Gen 4 Glocks and they worked with the OEM RSA. Link to comment Share on other sites More sharing options...
HOGRIDER Posted December 9, 2013 Author Share Posted December 9, 2013 I don't have one but is it regarding the crescent shape cutout spot that the rear of the RSA assembly sits in? I have a Gen 4 with a KKM barrel which obviously has the cutout for a gen 3, but i already had a gen 3 guide rod in the gun. So i can't tell you if i had any problem with it. Either get the a gen 3 rod with adapter, or try the DRSA that you have in the gun. If you have any problems then switch it over. G17: You're absolutely right concerning the saddle for the rear of the RSA. After some careful, minor fitting, the Bar-Sto locked up perfectly. After reassembling the 17, I noticed this at the front of the slide: You'll notice the front of the RSA protruding slightly in front of the slide. After some thought and examination, I noticed the cutout was not identical to the G4 barrel. Assuming it's for the Gen 3 as you noted; so I ordered a Jager steel G4 to G3 guide rod along with several ISMI flat springs. Have plenty of time with the bad wx we're having; so I'll report back once I get the Jager parts and find a break to shoot the new setup. THANK YOU for chiming in!! Link to comment Share on other sites More sharing options...
HOGRIDER Posted December 9, 2013 Author Share Posted December 9, 2013 I have installed KKM conversion barrels in several Gen 4 Glocks and they worked with the OEM RSA. JBP55: After cycling the slide/barrel assembly 20+ times with the stock dual RSA, I feel confident the pistol would function just fine during a firing session. I ran several magazines of snap-cap rounds along with a few live factory and reload rounds, and the feeding and extraction worked perfectly. Realize it's not actual live firing, but again I think the stock RSA would function fine. Just not satisfied with the stock RSA having a slight protrusion as noted above. Going to see how the Jager conversion RSA works and will go from there. I'll eventually test both RSA's for my own satisfaction, and hopefully report back asap. Thanks for your reply! Link to comment Share on other sites More sharing options...
rrickysee Posted December 10, 2013 Share Posted December 10, 2013 I'm running a KKM in my Gen4 34 with stock RSA. No problems here. I have shot around 4,000rds. Link to comment Share on other sites More sharing options...
HOGRIDER Posted December 10, 2013 Author Share Posted December 10, 2013 I'm running a KKM in my Gen4 34 with stock RSA. No problems here. I have shot around 4,000rds. Glad to hear! KKM makes excellent products! Thanks. Link to comment Share on other sites More sharing options...
G17 Posted December 10, 2013 Share Posted December 10, 2013 (edited) Hey brother, i hope this doesn't bum you out and i hope i'm wrong but the Jager Rod is meant to have the same size rear as the OEM DRSA so that you can drop it right into a gun that has a barrel with the Gen 4 cut. You have a barrel that has the 1-3 Gen cut. So i would think you would need a 1-3 Gen Stainless or whatever material rod and then just use the guide rod adapter to take care of the front. What i'm saying is if you have the problem with it sticking out of the front, i dont think the Jager will make much difference because it has the same rear as the DRSA you already have. I hope that wasn't confusing. Regardless though, i'm sure you'll be fine. Jager makes very good products. Edit: To see what i'm talking about go on their site and look at the picture of the Gen 4 conversion rod and then look at the Gen 1-3 Rods. Look at the back of both the rods. The Gen 1-3 rods are what will fit the Bar-sto barrel that you have, you would just need a adapter for the front. Edited December 10, 2013 by G17 Link to comment Share on other sites More sharing options...
HOGRIDER Posted December 11, 2013 Author Share Posted December 11, 2013 G17: I fully understand what your saying! I'm at a bit of a disadvantage here as I don't currently own a Gen 3 model. But, after some research, I'm finding a few threads that shed some additional light: http://www.brianenos.com/forums/index.php?showtopic=155040 Also, found a thread at another forum that specifically shows pics and discusses using Gen3 barrels in Gen 4 guns without any problems. Yes, there are differences in early G3 barrels for the RSA; but as shown in pics the later G3 barrels have identical RSA cutouts as G4 barrels. Also it was stated: Don't forget that the RSA doesn't really "fit" in the cut, it only rests there till the slide is completely installed on the frame. It is a way to keep the spring put to make installation easier, not for functioning. In normal operation, the spring doesn't touch the barrel at all. And you'll notice that my G17 is in battery as shown in the above pic. Also was stated: That is exactly what makes the unnecessary worry about Gen 3 and Gen 4 barrel compatibility all nonsense. Glock's "will fit" info on the parts order form acknowledges no distinction between generations. One can not order a "Gen 4" barrel. Your gen4 Glock will run like a sewing machine with the old gen3 barrel. Source: called Glock about two years ago and asked if I could speak to an technician, the nice lady there said, yes of course now moment please. The technician then said that my gen4 will run just fine with a gen3 barrel in it. I also asked him what the difference is between the two. He said that the half circle cut out on the barrel lug is shaped differently, but this does not affect reliability if you use a gen4 spring with a gen3 barrel, and that this is the only difference. They are the same. The assembly half circle is just that. For assembly, not function. I'll still not have a definitive answer till I receive the Jager assembly; but there may be an issue with the front lug itself on the Bar-Sto. Hope to give them a call tomorrow or Thursday. They are very hard to get through to on the phone. Thanks for your feedback........ Link to comment Share on other sites More sharing options...
G17 Posted December 11, 2013 Share Posted December 11, 2013 No problem, i'm sure it will work out just fine. Good luck! Link to comment Share on other sites More sharing options...
HOGRIDER Posted December 12, 2013 Author Share Posted December 12, 2013 (edited) G17: I may have found an excellent animation that helps to explain what's going on with my stock RSA and the Bar-Sto barrel: http://web.archive.org/web/20120320082942oe_/http://www.sniperworld.com/flash/version16_tgs.swf Once this page loads, a tab labeled "VISUAL CONTROLS" can be selected at bottom of page. Then selecting "HIDDEN" for the Slide and Receiver shows an excellent (IMO) rendering of what's happening at the rear of the RSA. Appears that the top "face" of the front lug actually comes in contact with the rear of the RSA when the slide/barrel is in battery. If this animation is indeed accurate, I understand what's going on with my setup. Hope this proves beneficial.......... Edited December 12, 2013 by HOGRIDER Link to comment Share on other sites More sharing options...
G17 Posted December 12, 2013 Share Posted December 12, 2013 Oh ok, yah i have that animation bookmarked. A very good reference. Hope you get that thing running how ya like! Link to comment Share on other sites More sharing options...
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