Umarex T4E HDB 68 — 16J .68 Cal CO2 Shotgun

Umarex HDB 68 Review — Home Defence Blaster

The Umarex T4E HDB 68 is a powerful .68 calibre CO2 shotgun designed for home defence, training, and paintball skirmishing . HDB stands for Home Defence Blaster, and this model delivers exactly what the name promises . The pump-action shotgun features a 16-round tubular magazine and semi-auto firing . You cock the pump once, then each trigger pull fires a round without needing to pump again. The UK legal version delivers 16 joules of muzzle energy, making it one of the most powerful .68 calibre airguns available for certificate-free ownership . For home defence and force-on-force training, the HDB 68 is a serious tool.

Umarex HDB 68 UK — Power and Ammunition

The HDB 68 fires .68 calibre ammunition at approximately 320-380 FPS with 16 joules of energy . You can use paintballs, rubber balls, powder chalk balls, and pepper balls where legally permitted . The 16-joule power level delivers a hard-hitting impact that will deter any aggressor . The smoothbore barrel measures approximately 400mm (15.7 inches), and the overall length is 638mm (25.1 inches) . The shotgun weighs 2.5-2.8 kg depending on configuration . This gives the HDB 68 substantial heft without being unmanageable.

Umarex HDB 68 Gen 2 — Key Improvements

The Gen 2 model introduces the Quick-Piercing System 2.0 . You insert a 12g CO2 cartridge into the grip, and it remains unpierced until you need it. A simple tap on the piercing screw activates the gas instantly . This means you can store the HDB 68 ready for immediate use without worrying about CO2 leakage over time . The Gen 2 also features a tool-free pressure release for safe decompression . The textured grip provides better control, and the M22x1.5 threaded barrel accepts accessories like the X-Tracer unit . The included metal muzzle brake adds to the intimidating appearance.

Umarex HDB 68 Accessories — Rails and Mounting

The HDB 68 features an integrated Picatinny rail on top of the receiver . You can mount a red dot sight for faster target acquisition. A long Picatinny rail on the left side of the forend accepts tactical lights or laser designators . The shotgun also includes M-LOK compatible mounting points for additional accessories . For improved winter performance, an HPA adapter replaces the 12g CO2 system and connects to a compressed air tank . This provides over 350 shots per fill and consistent power even in freezing temperatures .

Umarex HDB 68 Problems — Honest Owner Feedback

The HDB 68 has some limitations worth discussing. The trigger is double-action only, meaning each pull requires a long, medium-weight stroke . This makes rapid, precise shooting more challenging than with a single-action trigger. The factory sights are non-adjustable, so you may need a red dot for accurate aiming . Some owners report that tall shooters (around 6 feet) may experience jams when aiming up or down, as the internal magazine feeds best when the shotgun is horizontal . Rubber ammunition can sometimes stick in the feed tube; lubricating the rounds with silicone spray resolves this issue . The external build is mostly polymer, though the barrel, internal magazine, trigger, and sights are metal .

Umarex HDB 68 For Sale UK — In Stock at Fieldcraft Airguns

Fieldcraft Airguns has the Umarex T4E HDB 68 in stock now. We offer both the Gen 1 and Gen 2 models, with the Gen 2 featuring the Quick-Piercing System 2.0 and enhanced grip texture . The shotgun includes a 16-round tubular magazine, metal muzzle brake, and Picatinny rail sections. Spare 12g CO2 cartridges and .68 calibre rubber balls are available separately. Every Umarex HDB 68 sold by Fieldcraft Airguns comes with our exclusive 12 month warranty. We offer delivery straight to your door. We recommend adding a pack of 12g CO2 cartridges, a tin of .68 cal rubber balls, and a budget red dot sight to your order. For shooters wanting to use the HDB 68 in cold weather, ask us about the HPA adapter kit for consistent winter performance .