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Posted: 7/3/2006 9:05:33 PM EDT
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We have been getting tons of inquiries about our SLR15 Extraction System. Here is some clarification. Our Extraction System uses: *Nickled Extractor *Heavy Duty Extractor Spring *Heavy Duty Extractor Spring Insert *Sully/SLR15 Extractor Ring  The most prevalent issue we see with the AR15/M16 weapon system is fail to extract. With all the custom rifles we have built for the last decade we always beefed up the extraction system. So when we came out with our own line of rifles, the SLR15 , we made the decision to beef up the extraction system as much as possible. We chose to use a Nickled Extractor, as it makes the surface a little harder which extends its life. The nickle also adds some lubricity. It has been a visual signature piece on our rifle line as well. The Heavy Duty Extractor Spring Insert is no secret as we see them in many other rifles out there. It is sometimes referred to as the M4 insert (black in color). The beauty of this insert is that it is denser than the standard blue one. This helps keep the extractor spring compressing straight instead of wobbling, plus add some positive tension to the extractor.  The Heavy Duty Extractor Spring is not secret either. Many people purchase these as an aftermarket item to enhance extraction and make it more reliable. These are a great addition to any rifle. The use of an O-ring is no secret either. Many people have used O-rings for years. We have put them in other weapon systems for way over a decade. These work well. What we have found is that most O-rings are made of butyl rubber. Butyl rubber works fine for positive tension. The downside to butyl rubber is that it's temperature range is -65 to 200. Butyl rubber also does not hold up well to many solvents, lubricants and chemicals, especially those that might be petroleum based. With some research we have had a special ring made for us, the It operation range is -15 to 400, so it holds up better under extreme heat. It also holds up well to solvents, lubricants, and chemicals, especially those that are petroleum based.  Up to this point we have only made the SLR15 Extraction System available on our SLR15 Rifles. People have asked for it and now we are now making them available for purchase. Cost is $38.95 We have several other things that are about to be unveiled, and we will post them here. CY6 Greg Sullivan "Sully" Chief Instructor SLR15 Rifles TheDefensiveEdge.com |
I don't understand how lubricity on an extractor would be a benefit necessarily; but then I haven't done any research in this area or had any experience with it. Could you explain that for me in layman's terms? |
The nickle has lubrication properties. This lubricating makes the extractor have less friction when it slides over the casing (whether brass or steel). Friction causes wear. Less friction makes the extractor last longer. CY6 Greg Sullivan "Sully" Chief Instructor SLR15 Rifles TheDefensiveEdge.com |
A) If the edge of the extractor that grips the round becomes worn and rounds off. B) Inadequate extractor tension. C) Very bad edge on the case. Obviously there is nothing that you can do for case (C). Both cases (A) and (B) are accounted for in some manner (by using a quality forged/plated part and using a very high quality tensioning system). If this extraction system fails you, you either have bad ammo or a very tight chamber. |
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