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sbrs
Styrene-butadiene or styrene-butadiene rubber (SBR) describe families of synthetic rubbers derived from styrene and butadiene (the version developed by Goodyear is called Neolite). These materials have good abrasion resistance and good aging stability when protected by additives. In 2012, more than 5.4 million tonnes of SBR were processed worldwide. About 50% of car tires are made from various types of SBR. The styrene/butadiene ratio influences the properties of the polymer: with high styrene content, the rubbers are harder and less rubbery. SBR is not to be confused with a thermoplastic elastomer made from the same monomers, styrene-butadiene block copolymer.
View More On Wikipedia.org
View More On Wikipedia.org
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I laughed at 24 inches, anyone else laugh at the SBR length they put on their Form 1?
Finally finished picking out parts for my wife's SBR. The final estimated length of the rifle when complete is... 24 inches. I pulled a tape measure out to that length, shouldered it and came out of my office to show her. "Honey look!" *snicker* "This is how big yours's is going to be!" *WHEEZE*...- Discussion Thread
- Rifle Discussion
- pacmanwa
- Replies: 17
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Why Are Short Barreled Rifles Actually Regulated in the US?
One about the legislative history of SBRs. Just passing it along.- Discussion Thread
- SBR / SBS / AOW
- CountryGent
- Replies: 11
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Form 1 Efile - 2 SBRs - Approved
Just in case anyone is looking for info on current waits - I e-filed two form 1 SBRs: Submitted 4/09 - Approved 6/07 Submitted 3/31 - Approved 6/08 Mailed fingerprints w/ tracking day after submission on each.- Discussion Thread
- SBR / SBS / AOW
- jamez
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- Tags
- sbrs
- Replies: 15
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J
National SBR AR Lower convert back steps
I have rifle that I tax stamped into a SBR; I'd like to revert it back to a rifle. Now it doesn't currently have a SBR length upper/ barrel attached it's essentially stripped. Do I just write the ATF as in their laws * 5320.4 and ask them to remove it from the NFA registry and wait about a week...- Discussion Thread
- Firearm Laws & Legal
- J3W WICK
- Replies: 9
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National ATF Making AR/AK Pistols AOWs & SBRs and MORE!
Just saw this on you tube, but haven't read much on it yet. Sounds like the ATF is making an end run and it banning pistol braces. This is largely unrelated to the whole Q debacle. Or maybe not. Seems its all originating from Military Arms Channel, but no video directly from Tim yet. Edited...- Discussion Thread
- Firearm Legislation & Activism
- SCARed
- Replies: 121
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NFA Processing & Coronavirus
From the American Suppressor Association: NFA Processing & Coronavirus- Discussion Thread
- NFA Weapon Discussion
- CountryGent
- Replies: 13
