The standard configuration for an AR-15 uses a 16" barrel. However, there are some cases where it is advantageous to have a shorter barrel length. more »

Here is a quick look at the 3 lug mount for an Silcencerco/SWR Octane suppressor in 9mm. more »

I've covered engraving NFA receivers for SBR registration in this article. However, if you specifically talking about an AR-15 lower here are some things you should consider. After talking to several people dealing in NFA items and my local ATF ag… more »