Miniature Stories comprises 18 designs of SAF soldiers in three categories - parade, assault infantry section and the standard obstacle course. Each hand- painted metal figurine is 6cm tall.
In the parade series, the SAR 21 rifle-trotting soldiers don different berets and feature three races - Chinese, Malay and Indian - coupled with stern-looking regimental sergeant majors yelling out commands.
The assault series captures a section of seven soldiers in camouflage get-up, using weapons such as a Matador anti-armour weapon system. Figurines can be customised by adding formation and skill badges to the uniforms.
Besides third-generation soldier figurines, there is also a first-generation one in the classic Temasek Green uniform that was worn in the 1960s and 1970s, and a second- generation soldier armed with an M16 rifle. The first-generation one was introduced in April to coincide with NS50, a year-long celebration to commemorate 50 years of national service this year.
Finally, for the standard obstacle course series, the figurines depict three stations, such as scaling a low wall and doing the low rope, in which a soldier hoists himself up on a rope.
The figurines range from $59 to $75 each and can be bought online (miniature-stories.com).
Mr Lin believes that these figurines strike a chord with Singaporeans who have forged a special camaraderie through national service.
"Looking at these figurines brings back good memories of training and cheong sua-ing during outfield camps," says the former third sergeant in the armour infantry unit. Cheong sua is Hokkien army lingo for undergoing rigorous training.
"Whether they like it or not, most guys have memories of wearing the army uniform and using weapons, and whenever army buddies meet, sharing stories of going through the training never gets old," he says.
The couple pumped "a low six-figure sum" into the venture.
Each figurine takes four months to produce. The design process starts with e-mailing photos and magazine cut-outs of military gear to a China-based toy manufacturer, which specialises in making military figurines. The couple also turned to war movies to capture the actions of soldiers in the figurines.
Mr Lin drew on his experience as a marksman by modelling for the clay prototypes to ensure that the posture of the soldiers and position of the weapon are accurate.
Every detail, down to the skeletal battle order - a belt that comprises ammunition pouches and tools - is intricately carved in the figurines. About 300 to 400 figurines are produced in a batch.
The toughest part was replicating the pixellated camouflage pattern in the current army uniform.
Ms Chua says: "As there are no fixed designs to follow, the painters had to experiment with shades of green, brown and black and paint them dot by dot."
Ms Chua, a former civil servant, manages Miniature Stories full time. The couple have no children.
Business is gradually picking up with a successful run at the Army Open House in the F1 Pit Building two weeks ago. The couple have sold about 400 figurines since September last year.
Ms Chua says most of the customers are men aged above 35, as they tend to reminisce after completing their reservist cycle.
Taxi driver Eugene Foo, 39, who bought 10 figurines, says: "The low-rope standard obstacle course figurine brings back memories of my struggling to complete this station. These figurines would make it easier to share what I have been through with my grandchildren in the future."
Army regular Sathya Pannisilvam, 26, received the entire assault series as a birthday present and says these figurines remind him of his stint as a section commander in the Guards formation.
"Fighting an outfield mission with your men gives you the best memories in the army and these are captured through the good details of the weapons and uniform."
Later this year, Miniature Stories will roll out more second-generation soldier figurines, including those depicting fun and informal scenes of "soldiers talking while cooking in outfield camps".
Miniature armour vehicles such as the now-defunct AMX-13 SM1 Tanks that Mr Lin trained in are also in the pipeline.
Beyond the army, the couple also intend to introduce miniature figurines depicting key milestones in Singapore's history, such as the broadcast of Singapore's independence from Malaysia in 1965 and old street scenes.
Mr Lin says: "Singapore has come a long way to make its mark on the world stage. These figurines are a good way to celebrate our way of life."