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9/22/2017 12:11:25 AM
Posted: 8/21/2003 7:39:34 AM EDT
I just bought my first AR-15 () which is a Rock River Arms M4gery with the 16" barrel and heard that I can just remove the upper and put on any post-ban upper (like a 20") and have it work right away - like a 5 second swap. My question is, I have seen the AR-15 7.62x39 uppers - can I swap these in the same manner? If so, what do I need to make sure they have (I assume a bolt/etc. made for the 7.62x39 round)? I also assume they take different mags. Are the mags hard to find? Do they require any special adapters for the magwell, or are they the same size as normal AR-15 mags?

Thanks!
Link Posted: 8/21/2003 7:55:40 AM EDT
Model 1 Sales has 7.62x39 uppers in stock and ready to ship. They are selling them (complete with bolt/carrier) for about what the dealer cost is from OLY or RRA. I ordered a flat top 16" and had it in my hands in 3 days. Great service and product. There are no adapters or mods needed to pin on a 762 upper to a standard lower. As for the mags, you can use standard AR mags with no problem. Because of the dimensions of the 762 round, you can only load 7-9 rounds. There are some "Franken Mags" out there if you can find them. This is an AK mag with an AR mag upper 1/3 welded on. Very strange looking and I have never tried them. The last alternative is to get one of the new SW lowers that accept unmodified AK mags and drums. I just finished mine and it runs great. Here is a pic......... [img]http://www.crinamex.com/ar47drum.jpg[/img] [img]http://www.crinamex.com/ar47waffle.jpg[/img]
Link Posted: 8/21/2003 9:15:19 AM EDT
Originally Posted By rickinvegas: Model 1 Sales has 7.62x39 uppers in stock and ready to ship. They are selling them (complete with bolt/carrier) for about what the dealer cost is from OLY or RRA. I ordered a flat top 16" and had it in my hands in 3 days. Great service and product. There are no adapters or mods needed to pin on a 762 upper to a standard lower. As for the mags, you can use standard AR mags with no problem. Because of the dimensions of the 762 round, you can only load 7-9 rounds. There are some "Franken Mags" out there if you can find them. This is an AK mag with an AR mag upper 1/3 welded on. Very strange looking and I have never tried them. The last alternative is to get one of the new SW lowers that accept unmodified AK mags and drums. I just finished mine and it runs great. Here is a pic......... [url]http://www.crinamex.com/ar47drum.jpg[/url] [url]http://www.crinamex.com/ar47waffle.jpg[/url]
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I have a 7.62x39 Colt or 2. USA frankenmags feed flawlessly, no matter the capacity. Had to comform a couple of the mags to fit the magwells... Bend, twist, squash.. The 7.62 USA frankenmags work in [red]all[/red] my lowers. I have a couple of other frankenmags that do not like bump firing. Maybe I just fuxxored them up with my hammer. WECSOG!!!! YMMV
Link Posted: 8/21/2003 11:10:09 AM EDT
ONE QUESTION: WHY??? You can get a REAL AK for $330.00 that works flawlessly.
Link Posted: 8/21/2003 11:49:16 AM EDT
Originally Posted By SC-Texas: ONE QUESTION: WHY??? You can get a REAL AK for $330.00 that works flawlessly.
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I guess this means you shoot a $500 OLY plinker? No sense wasting all that hard earned cash on one of those overpriced Bushmasters. I built my AR47 for only one reason, I wanted to. I thought it would be a nice addition to my 223's and 9mm and I did not want to go the "only load 7 round" or "Frankenmag" route.
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