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[ARCHIVED THREAD] - er-15??? (Page 1 of 2)
Posted: 10/20/2005 9:41:21 PM EDT
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Anyone ever heard of an er-15? I bought it for a good price. He told me it is an m16a1 used in service that has been converted for civilian use. However, there has never been a hole in the lower for a standard sear. so i am questioning his claims... All the parts are ar-15. however it looks like a vietnam m16, triangual grip/flash suppress/stock/whole upper... Any thoughts? I am going to try to post a pic. PLEASE let me know if you have any ideas. i cant find any info on an er15. BTW it is stamped with Ornance design co, on the mag well it says cal .223, model er15, ser uso 100xx (not really xx but it is 5 digits total starting with 100) I am going to try to post a pic 
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The bolt and carrier have the "C" i got it for 750.. at least i think its a good price...... includes bayonet (stamped with colt, made in germany) atchisson mark II .22 kit 75rnd firepower drum 3 30's 1 20rnd and 1 40rnd scope mount bunch of extra parts (hammers, triggers, bolts, disconnectors, springs/pins) tac carry case 2000 rounds |
No exceptions that i'm aware of. Maybe the upper at one time was in service is what he ment???.... I'd take the lack of a sear pin hole to mean he was bullshitting ast to the whole gun being in service at some time. But I could be wrong but I doubt it. Not that it matters with everything you got with it for the price you said you paid I'd still say you got a more then good deal on that. |
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he told me he bought it while in the military. I am starting to wonder if this is one of those guys who has never had anything to do with military and just likes to "pretend"... So he bought himself a lower and slapped a m16a1 upper on it, then the stories begin........ maybe next he will tell me how single handidly won WW1... (of course with an AR!!!) hah! |
| They built Semi-Auto AR's in the early to mid 1980's....H&H in Redwood City, CA and Wayne's Gun Shop in Dublin, CA carried the complete A1 rifles and carbines as well as lowers....Supposedly the lowers came from SGW=Olympic arms....they are forged lowers....they are not converted Auto Lowers |
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www.ar15.com/forums/topic.html?b=3&f=118&t=252829 This is a quote from a Ken Breda off the user groups, dated July 2, 1997. "Ordnance Design Co. aka ORDCO was a small company in Santa Clara CA. in the1970's owned and operated by Ed Ryberg (sp). Hence the ER15 modeldesignation. He made sten gun recievers and other class 3 stuff. Don't knowwhere he is today. The AR15 reciever he made was an investment casting, cast by a firm in So.Cal. and finished by him in his shop in Santa Clara,CA. I believe thisreciever has the distinction of being the first reciever (AR type)to be likethe M16 externally. The others to this point were very boxy looking but hadall the holes in the right place for the fire control parts. The onlyproblem I know of with these recievers(exept for being investment cast) wasthat the buffer retainer pin hole was not in the right place and the buffertook a beating by the pin. The hole should be farther forward so the pindoesn't stop the buffer in it's forward position.The buffer should remain incontact with the bolt carrier during the entire firing cycle and theretainer should only retain the buffer when the recievers are hinged open. " |
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hmmm, it appears cast. Cast Industries (currently a part of OAI) is in SoCal and did/does the casting for them. how's the face of the buffer look bribowl? IIRC OAI wasn't around until the mid 70s (as SGW) and then only as a reseller of demilled USGI parts, receivers came later, billet ones first again IIRC. Might just be similiar placement and fonts. do you see this mark on the upper?  |
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i am having a hard time figuiring out where on the upper that mark would be.. Oh, btw, when i close the upper on the lower the bolt carrier does come in contact and compresses the buffer spring back a tiny bit. . it does take at least some stress off the buffer pin... |
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investment cast is the lost wax method of casting, www.entrepreneur.com/article/0,4621,284213,00.html it's fast and cheap but not very strong and the surface finish usually looks like crap. in the pic the delta ring is at lower right and the front of the ejection port cover is at the lower right. the wear on your buffer looks like it's related to a burr on the rear of the bolt carrier. If the bolt carrier is contacting the face of the buffer when you pin the rifle together then you're probably fine. |
is it something i should worry about? would it be a good idea to replace the lower with a good one? i dont like the idea of a cheaply made firearm. (remember bryco, jennings? hah!) |
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Here is a link to view what the difference betwenn cast and forged looks like.......... www.olyarms.com/?page=faq# It's the link on the 5th Q down on that web page. What did you pay for the rifle? If it is cast, you can buy a forged stripped lower for $100 +/- . Does your upper have any letters or symbols marked on the right side of the carry handle? |
I paid 750 for it with lots of accessories- i think i came out okay!! 5 mags 75 rnd drum atchisson mark II .22 kit m8 bayonet 2000 rounds scope mount lots of springs.pins 2 extra assembled brand new bolts tac carry case my upper looks identical to a m16a1 upper. It has no markings anywhere on it. |
ar15.com/forums/topic.html?b=3&f=118&t=223495 |
im not sure what i am supposed to be seeing on that link.... |
judging from the OA page telling the diff between cast/forged mine is cleary forged. Is that the better one? |
I dont think that is what it is. C MP the m&p are merged together, the right line of the m is the left line of the p. i found a barell marking identify site and it says it means colt magnaflux |
saved for posterity 
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my barrel is identical to the 3rd picture down http://www.biggerhammer.net/ar15/barrelsbolts/ |
lol C MP stands for Colt Magnetic Particle |
I got an old upper receiver in a bunch of parts I bought and it had a mark on it that I had never seen before -- and no other markings. It has the large pivot pin hole up front.  I only use it for some of my 22lr conversion kits. I take it that the upper is a cast one? If so, I guess I picked the right one for the rimfire stuff. |
That CMP thing was very interesting, most creative. I kinda like it. |
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C MP means Colt's Magnetic particle inspected, & Proofed. More info on barrel markings here: ar15.com/forums/topic.html?b=3&f=118&t=241681 The VP in the triangle is a real old Colt's proof mark, it means "Verified Proof". The C in a square is a newer proof mark, not sure of it's exact meaning. |
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This is the first ER15 lower I have seen pictures of. If that lower is cast it is the best looking cast lower I have ever seen. From Colt's none of those sub assembies go together, except maybe the barrel & bolt group. The kit is a civilian assembled mutt. Like you said the barrel is Colt's but don't know what type in that you did not tell us what the markings are after C MP. Barrel may have original finish, is the front swivel riveted on? The forward assist is late 80's, could be Colt's, could be a cheap knock off, hard to tell from that angle. Charging handle and Delta ring apear to be aftermarket, is the delta ring plastic? Upper receiver is either a Colt's USGI XM16E1/early M16A1 upper, or a USGI H&R/Hydramatic upper. If a Colt's upper it would have Colt's Verified Proof markings in front of the port door. Since you upper has been refinished I would think the marking would be gone. Juding from the pitting on the upper I bet it is made of the older used alloy 6061. Take a look at the left side of the front take pivot pin lug on the upper recever. Is it counterbored? |
[ARCHIVED THREAD] - er-15??? (Page 1 of 2)
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