Iver Johnson HP18 12 Gauge Semi-Automatic Shotgun with Detachable Stock

  • Item Number: HP18
  • /
  • View More Items by Iver Johnson
  • /
  • Condition: NEW
Iver Johnson HP18 12 Gauge Semi-Automatic Shotgun with Detachable Stock
$199.99 $379.00

Temporarily Out of Stock

Includes FREE shipping
  • KELTEC KSG 12-GAUGE SHOTGUN

    Kel-Tec KSG 12 Gauge Shotgun
    $499.99

  • MILITARY ARMAMENT CORPORATION MAC 1014 BREACHER 12GA 18.5` BARREL

    Military Armament Corporation 1014 Breacher 12 Gauge Semi-Automatic Shotgun with 18.5 Inch Barrel
    $329.99

  • GFORCE ARMS GF12AR AR-12 12 GAUGE SEMI-AUTO SHOTGUN

    GForce AR-12 12 Gauge Semi-Automatic Shotgun
    $219.99

  • MOSSBERG 990 AFTERSHOCK 12 GAUGE 14 IN BARREL

    Mossberg 990 Aftershock 12 Gauge Semi-Automatic with 14 Inch Barrel
    $1,120.00 $879.99

  • MOSSBERG MAVERICK 88 CRUISER 12 GAUGE PUMP

    Mossberg Maverick 88 Cruiser 12 Gauge Pump Shotgun
    $234.99

  • GFORCE ARMS GF12 BP 12GA 18.5 BLK/BLK

    GForce GFBP Bullpup 12-Gauge Semi-Auto Shotgun with Black Finish
    $219.99

  • MILITARY ARMAMENT CORPORATION MAC 2 TACTICAL 12GA INERTIA 3` WOOD STOCK AND FOREARMS 18.5` BARREL

    Military Armament Corporation MAC 2 Tactical 12-Gauge Semi-Auto Shotgun with Wood Stock
    $329.99

  • MOSSBERG 940 SECURITY 12GA PRO SERIES FIBER OPTIC SIGHT

    Mossberg 940 Pro Tactical 12 Gauge Optic Ready Semi-Automatic Shotgun with Black Synthetic Stock
    $719.99

  • MILITARY ARMAMENT CORPORATION MAC 1014 12GA 18.5` BARREL WOOD STOCK

    Military Armament Corporation MAC 1014 12-Gauge Semi-Auto Shotgun with Wood Stock
    $429.99 $349.99

  • CITADEL BOSS TIDALWAVE PUMP 12GA 14.74 IN BARRELBLACK FINISH

    Citadel Boss Tidalwave 12 Gauge Pump-Action with 14.74 inch Barrel
    $359.00 $199.99

  • MILITARY ARMAMENT CORPORATION MAC 1014 MARINE 12GA 18.5` BARREL NICKEL FINISH

    Military Armament Corporation MAC 1014 Marine 12 Gauge Semi-Auto Shotgun with Electroless Marine Nickel Finish
    $419.99 $399.99

  • PANZER ARMS MAG12 TACTICAL 12 GAUGE SEMI-AUTO SHOTGUN

    Panzer Arms MAG12 Tactical 12 Gauge Semi-Auto Shotgun with Flat Dark Earth Finish
    $249.99

  • Fiocchi 12 Gauge 2-3/4 in 9 Pellet Defense Dynamics 25/Box

    Fiocchi 12 Gauge 2-3/4 in 9 Pellet Defense Dynamics 25/Box
    $10.99
    ($0.44 / round)

  • Federal 12 Gauge Top Gun Target 2 3/4 inch 8 Shot 25/Box

    Federal 12 Gauge Top Gun Target 2 3/4 inch 8 Shot 25/Box
    $12.99 $7.99
    ($0.32 / round)

  • Federal 12 Gauge 2-3/4 in 9 Pellet 00 Buckshot Police Trade Ammo 5/Box

    Federal 12 Gauge 2-3/4 in 9 Pellet 00 Buckshot Police Trade Ammo 5/Box
    $4.99
    ($1.00 / round)

  • Winchester 12 Gauge 2 3/4 In 9 Pellet 00 Buck Super X 5/Box

    Winchester 12 Gauge 2 3/4 In 9 Pellet 00 Buck Super X 5/Box
    $6.99 $4.99
    ($1.00 / round)

  • Winchester 12 Ga 2 3/4 in Smokeless Powder Blank Load Super X 25/Box

    Winchester 12 Ga 2 3/4 in Smokeless Powder Blank Load Super X 25/Box
    $28.21 $21.99
    ($0.88 / round)

  • Winchester 12 Ga 3 in 1-3/4 oz #6 Long Beard XR 10/Box

    Winchester 12 Ga 3 in 1-3/4 oz #6 Long Beard XR 10/Box
    $24.99
    ($2.50 / round)

  • Hornady 12 GA 2-3/4 inch 1 oz Rifled Slug American Whitetail 5/Box

    Hornady 12 GA 2-3/4 inch 1 oz Rifled Slug American Whitetail 5/Box
    $9.99
    ($2.00 / round)

  • Panzer Arms 12 Gauge 2-3/4 In 9 Pellet 00 Buckshot Lequian Special 5/Box

    Panzer Arms 12 Gauge 2-3/4 In 9 Pellet 00 Buckshot Lequian Special 5/Box
    $4.99
    ($1.00 / round)

  • Hornady 12 Ga 2 3/4 Inch 325 gr Interlock American Whitetail Slug 5/Box

    Hornady 12 Ga 2 3/4 Inch 325 gr Interlock American Whitetail Slug 5/Box
    $10.99
    ($2.20 / round)

  • Federal 12 Gauge 2-3/4 inch 1-1/8 oz 9 Shot Top Gun Target 25/Box

    Federal 12 Gauge 2-3/4 inch 1-1/8 oz 9 Shot Top Gun Target 25/Box
    $9.99
    ($0.40 / round)

  • Hornady 12 Gauge 2-3/4 Inch #4 Buckshot Varmint Express 10/Box

    Hornady 12 Gauge 2-3/4 Inch #4 Buckshot Varmint Express 10/Box
    $12.99
    ($1.30 / round)

  • Hornady 12 Gauge 2 3/4 in 1 oz Rifled Slug American Gunner 5/Box

    Hornady 12 Gauge 2 3/4 in 1 oz Rifled Slug American Gunner 5/Box
    $9.99
    ($2.00 / round)

Product Description

The Iver Johnson HP18-12 is a 12 Gauge Semi-Automatic shotgun with an 18.5" smooth bore barrel. This shotgun accepts 2-3/4" & 3" shells. The stock is two-piece detachable; meaning it comes with a full stock pistol grip, but with the push of a button, the stock detaches and leaves the pistol grip on the shotgun, giving you two types of stock in one. Features an externally threaded muzzle brake to help reduce felt recoil.

Firearm Specifications

  • Manufacturer: Iver Johnson
  • Model: HP18-12
  • Gauge: 12 Gauge
  • Barrel: 18.5" Smooth Bore
  • Chamber: 3"
  • Finish: Matte Black Chrome
  • Overall Length: 40.5"
  • Capacity: 5+1 (2-3/4" Shells)
  • Overall Length (with stock removed): 30"
  • Length of Pull: 14.5"
  • Weight Unloaded: 6 lbs. 6 oz.
  • Front Sight: Fiber Optic
  • Rear Sight: White Dot
  • Other Features: Muzzle Brake; Picatinny Rail on Top; Detachable Stock

Customer Comments & Questions

Customer Reviews

(5 out of 5) Iver Johnson HP18 12 Gauge Semi-Automatic Shotgun is not for the faint of heart!
by Tim from Sioux Falls, SD on April 10, 2022

The Iver Johnson is wicked mean. It is monster you need to tame. I was not expecting it to beat me but you know what they say about pleasure and pain. I do have a couple of complaints, like the take down pin walking out and the annoying way you need to remove the charging handle to clean the gun, but I still recommend this nonetheless. This is a home defense weapon, and I would hate to be on the receiving end of the Iver Johnson HP18 12 Gauge Semi-Automatic Shotgun!