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AR15.COM
11/7/2011 3:15:37 PM EDT
Anyone know what parts are not compatable with the Gen 4 ie: triggers,sights, barrels, mags, etc.
11/7/2011 7:20:04 PM EDT
[#1]
all of the above should function just fine unless something has changed. I do know that a gen 3 top end will mount and run just fine on a gen 4 frame. Also, if you plan on putting a gen 3 rsa in a gen 4, you will need an adapter. I run a gen 3 rsa in my gen 4 g17 for ease of disassembly as mine is an early gen 4 with the spring that likes to not come out of the slide. I use the lone wolf conversion.
11/7/2011 8:03:58 PM EDT
[#2]
Upon inspecting both barrels, they look different where the RSA would sit but they seem to cycle fine in both. I have never shot them interchanging the barrels though. A gen3 top end fits on a gen4 frame but not vice versus. Someone correct me if I'm wrong. Slide stops look to be interchangeable too.
11/7/2011 8:38:04 PM EDT
[#3]
Thanks for the replys so far

How about the mags?

will a 3.5# connector work?
11/7/2011 9:02:37 PM EDT
[#4]
Quoted:
Thanks for the replys so far

How about the mags?

will a 3.5# connector work?


Gen 4 mags work in Gen 3s, Gen 3 mags work in Gen4s as long as the mag release hasn't been switched for left handed use. The 3.5 connector works for both.
11/7/2011 9:18:08 PM EDT
[#5]
Thanks for the help
11/8/2011 6:26:11 AM EDT
[#6]
The barrel is compatible between Generations.

The parts that are not: trigger housing, slide lock spring of compact models(perhaps full size models as well, not sure), compact model locking block. Obviously the slide, guide rod, and magazine catch are not.
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