Apex Gunsmithing
27Feb/16

Detail Strip Guide: Lionheart LH9/Daewoo DP-51 & Variants

A while back I wrote a very basic text only guide for detail stripping the Lionheart LH9, a variant of the Daewoo DP-51 and its family of unique "triple action" pistols, but I never had the opportunity to make a proper guide with photos to match.  Today the LH9 gets a real guide as part of my ongoing series of detail strip posts to get caught back up!

The LH9 series of pistols is a premium version of the cult classic DP-51, which is itself a commercial variant of the South Korean service pistol, the K5.  Originally designed in the early to mid 80's as part of Korea's push for a domestically produced service pistol, the K5 was trialed to death over several years before final adoption in 1989/1990.  The history of Korean small arms and Daewoo/S&T Motiv is fascinating to read up on, I highly recommend the relevant chapters of Black Rifle which highlight US involvement in Korean small arms production during and after the Vietnam War.

On the homefront, the DP-51 was the victim of nebulous commercialization in the US, with numerous importers picking up batches of pistols including compact models and the relatively new .40S&W chambering christened the DH-40.  Between the model confusion, attempts to re-brand the pistols, and the sheer number of importers trying to pitch the gun as a new wonder-nine during the rise of the Clinton ban era, it's amazing that the DP-51 remains a cult hit and saw reintroduction in the US at all.  In 2011, the upstart Lionheart Industries turned the DP-51 into a premium hammer fired, alloy frame pistol with numerous features the US market demands in modern pistols.  The LH9 series maintains almost complete parts compatibility with the DP-51, and Lionheart provides a retail channel for parts to maintain both their LH9 and the original guns.

A plain black LH9N - "N" for Novaks sights.

A plain black LH9N - "N" for Novaks sights.

7Jan/14

LH9 Breakdown Part 2: Process and Thoughts

Before I get into a detailed and illustrated step by step tutorial, I figured I would post a quick order of operations and some thoughts on the Daewoo design.  That includes how the mysterious Triple Action system works, some comments on design and a few major "gotcha" spots that will save time and aggravation.

7Jan/14

LH9 Breakdown Part 1: Diagram

As a gunsmith one of my favorite pastimes is to rip apart guns I haven't seen before to challenge my mechanical aptitude. And usually my patience, but that's another story entirely. If you bought an LH9, DP51 or any other variant of the excellent Daewoo lineage but haven't been able to find good information on the pistol's internals, you've come to the right place!