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In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance. When a wave moves faster than the local speed of sound in a fluid it is a shock wave. Like an ordinary wave, a shock wave carries energy, and can propagate through a medium; however it is characterized by an abrupt, nearly discontinuous change in pressure, temperature and density of the medium. In supersonic flows, expansion is achieved through an expansion fan also known as a Prandtl-Meyer expansion fan.
Unlike solitons (another kind of nonlinear wave), the energy of a shock wave dissipates relatively quickly with distance. Also, the accompanying expansion wave approaches and eventually merges with the shock wave, partially cancelling it out. Thus the sonic boom associated with the passage of a supersonic aircraft is the sound wave resulting from the degradation and merging of the shock wave and the expansion wave produced by the aircraft.
When a shock wave passes through matter, energy is preserved but entropy increases. This change in the matter's properties manifests itself as a decrease in the energy which can be extracted as work, and as a drag force on supersonic objects; shock waves are strongly irreversible processes.
Mossberg New Haven 20ga- $159
DSF12 pump/semi auto 12ga- Benelli M3 clone, never fired, choke set $319 Sale price-$289 SOLD
Mossberg 535 Ulti-mag 12ga- choke set + turkey choke, 3.5in magnum, 2 barrels $429 Sale price-$369
New in box M12-AK, DP12 & Mossberg 590 Shockwave
I picked this up from a buddy last year with plans for it being a truck gun but sadly it just sits in the safe. My buddy ran maybe a box of ammo through it and I have not had the pleasure too. Just your standard 5+1 pump action 14" barrel with a gold bead front sight. It being a 20GA, it's more...
Item: 2x jugs of shooters world blackout powder
Good for .300 blackout, 7.62x39, 30-30, similar to lil gun. Unopened.
$40 (for both)
Item: magpul SL carbine length drop in handguard. Used
Item: Shokwave brace and buffer tube (no buffer or spring) Totally not to be used as a stock...
Now that the ammo has sold, selling my Brand New in Box Mossberg Shockwave.
Comes complete with original Box and all materials, original parts.
Upgraded to the following spec:
- Shockwave Raptor Forend
- Crimson Trace Side Saddle red laser (touch sensitive)
- GoGauge Delrin follower
I changed out a pistol brace of mine and so thus I have a spare brace on hand.
Gen 1 shockwave brace (black)
KAK dimpled tube
Also comes with a freebie but Im not sure it’ll have much use to you.
Endo tactical brace adapter, Ive filed it down and drilled the adapter to...
Mossberg shockwave FDE 12g with SBa3 brace, crimson trace green laser, ergo grip and ergo picatinny pump. Comes with original birds head grip and shockwave pump and box. Fired approx 8 shells through it so it's literally brand new.
Really fun shotgun and great for home defense or to conceal...
SB Tactical Brace for shotguns. Very lightly used, only two range trips. It greatly improves ergonomics and ability to hit your target, but I decided I prefer the standard setup a bit more. I bought this for $160 last Summer, they cost $200 now and are sold out almost everywhere. Asking for $140...
Mesa Tactical Ar-15 buffer tube and grip adapter for Mossberg 500 platform (including shockwave)
Mesa Tactical sureshell aluminum side saddle carrier with built in picatinny rail
$160 for both, trades welcome, see other ads
Brand new, never used matrix arms over the receiver side saddle for mossberg models 500, 590 and shockwaves. Side saddle sits right over the receiver and bolts onto the factory holes on all models. Comes with 6 shell holders which you can add two more on the other side or remove some as each one...
Back up for grabs. Posting because the gun doesn’t get enough attention.
Factory fde with sidesaddle installed. Gun itself is 4+1 and sidesaddle holds 6. That’s running 2 3/4 shells. Chambered for 2 3/4 and 3 inch for your discretion.
Open to trades, as to what you may ask? Firearms, worst I...
Picked this up recently on a whim and I like where the safety is on the 870 platform better. This has seen zero rounds and has just sat in the box.
Doing a catch and release with this one. $475. Just want what I paid for it. Transfer at either Pantel Tactical, Sound Loan, or Precise Shooter...