If a custom Homeworld and IG regiment isn't allowed, I can alter it

Name: Corporal Caius Langston
Race: Human
Gender: Male
Age: 26
Class: Imperial Guardsman, Recon/Vox Operator
Equipment & Weapon: 
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He is primarily armed with a Scoped Roth Pattern "Lightning" Lasgun, allowing him to fill a role of Designated Marksman, in between that of infantry and sniper, it is modified so that the scope sits above the top of the gun in a manner that still allows the integrated sights to be used. He has an Autopistol as a Sidearm, given to him by his father upon graduation of the Espurn Recon Training Program, two standard issue Frag Grenades, and a survival knife that doubles as a bayonet. Generic gear includes a Vox Caster unit, capable of reaching across the surface of most planets, and even ships in low orbit, an Auspex scanner for detecting enemies in close ranges, and a pair of Binoculars for scouting, on top of the standard issue guardsman gear for most planets. His uniform consists of camouflage fatigues with light flak plates integrated into the cloth of the uniform, with a flak-reinforced Patrol Cap, emblazoned with the Imperial Aquila, on his head.
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Appearance Description(text and/or picture):
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Caius has a rugged appearance, due in part of his extensive wilderness survival training as part of an Espurn recon unit. He keeps a short, but ragged beard, and scraggly, short brown hair. He's very lean, and somewhat muscular, in fair part of carrying a Vox caster on his back almost constantly. His skin is a light tan color. He is around 5 feet and 11 inches tall, with a weight of around 185 pounds.
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Traits(optional): Caius is very tough from years as a wilderness and recon scout for the Espurn 115th Recon Regiment. This has also made him an expert at stealth, CQC, and marksmanship. However, all this time spent in the wilderness without anyone to interact with besides his 2 former squadmates, so Caius is very lacking in regards to social abilites, and general casual conversation.
Biography(character backstory): 
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Born on the Imperial Forest World of Espurn, known for both massive amounts of wood-based exports, and some of the best Wilderness Recon and Sniper regiments, trained to supplement larger multi-world Guard forces. Caius, like most males, was raised with the plan of enlisting with the Espurn Guard. He didn't spend much time on education, just enough for the basic reading, math, and writing. Once he was old enough he enlisted. He graduated top of his class in Basic Training, and in the top squad after being designated for Recon training. During Recon training, he showed exceptional skill at Designated Marksmanship, Vox Operation, and Forward Observation. His skill earned him the NCO rank of Corporal. To reward him, his father gave him the family Autopistol, passed down for generations whenever a son graduated into the Guard. He was soon later deployed for 4 years before being brought onto the task force.
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Notable Deeds or Accomplishment(optional): He once was able to warn a large force of Guardsmen about an impending ambush. The force was able to flank and rout the cultists in question, ending the battle far earlier than expected. He was also able to kill an enemy cultist leader from around 800 yards away, managing to highly extend the average range of his gun to pull off the shot. This shot earned him the nickname "Laser Pointer" in his squad, to compliment the infamous "flashlight" nickname of the lasgun. Caius has found recently that (highly exaggerated) versions of his achievement have begun to spread throughout the Guard forces, surprisingly enough. One such version had him portrayed as a Catachan sniper shooting from over 2 miles away, and another as a Cadian Whiteshield who got promoted to Sergeant almost immediatly afterwards. He's very quick to correct those who he encounters telling this story.