Longtime resident Lady Liberty, age 236 was struck by a stolen Chevy Volt last night along the interstate. The driver and passengers, illegally in the US from their native countries across the world, then dragged Ms. Liberty into the woods and brutally sodomized her before heading to the local polling place where they registered using the names of Supreme Court justices and voted without being challenged by UN poll watchers.
Authorities found them around the corner, each with a large supply of newly legalized recreational marijuana, getting high. They were taken into custody and released a short time later with a kiss on each cheek and a prepaid gift card for WaWa to handle the munchies.
Ms. Liberty is in extremely critical condition in the Intensive Care Unit, and doctors are very wary of her chances of recovery. A crowd of zombie-like citizens are already gathered at the Liberty residence, preparing to loot it of valuables when she succumbs to her injuries or the Death Panel declares her worthless and pulls the plug.
I haven't used those but have used the ISOTunes sport advance. I'm not a fan. If you turn up the ambient gain too high there is a lot of static. Additionally I find that the plug works its way out of my ears when I'm cutting the grass. I also have the Etymotic Gunsport Pro plugs. I'd recommend those or the Otto NoizeBarrier rechargeable plugs.
Also I am not implying that all of them are a pos...quite the contrary. It might be a case of no one checking for that burr after they drill it. Poor quality control. Tell them you want a new slide and barrel.
Muzzle Brake, not Break...
My Spikes AR has a 14.5" barrel with a factory pinned Spikes Dynacomp brake, making the length 16" which is legal.
The upper you posted is a Colt upper and it has the Front Sight Post Gas Block, which does have a Bayonet lug. 95% of FSP gas blocks have them.