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Grant Lavelle

Lead Instructor | Owner

My name is Grant LaVelle, I am the owner of Maximum Life Expectancy. I started teaching Marksmanship and firearms skills in 1992 after completing the Marksmanship Instructor School at Camp Lejeune, NC while serving in the United States Marine Corps. After leaving the Corps in 1994, I started a career in law enforcement and continued to use the skills learned. Along the way I have taken numerous advanced instruction courses to improve my skills as I served in a variety of roles from Patrol, Investigations Bureau, SWAT, Sniper and Range Officer. While still in law enforcement I began working for MSSU as a Firearms Instructor for the Regional Police Academy and was their first instructor for MSSU's CCW program. In 2008 I decided it was time to start my own business in order to offer citizens with a better alternative to the normal training product available. I consider it an honor to provide you with quality firearms training.


Jake Moore

My name is Jacob Moore. I grew up in Joplin and played football at Joplin High School. In 2008 I enlisted in the Marine Corps and was a Recon Marine for four years. While a Recon Marine, some of the training I completed included the following : Special Operations Training Group CQB team member, Breacher, Combatant Diver, Airborne, S.E.R.E., and Pre-Sniper. I was the lead breacher of the Maritime Raid Force on the 11th MEU and operated in the Gulf of Aiden and the straight of Hormuz. I helped instruct the Cambodian National Counter-Terrorism Special Forces, Jordanian Commandos, and ROK Marines in marksmanship, close quarters battle, and breaching. I am now back in Joplin and willing to help share my knowledge, experience and training in any way that might protect you or your loved ones.

Assistant Instructor


Mike Cossey "25 Mike"

My name is Mike Cossey. I grew up in Bakersfield, California and moved to Joplin, Missouri in early 2009. My marksmanship training began with the Army National Guard in 2010, where for the last 10 years I have qualified expert or better with my M4 rifle and M9 pistol. I am currently a Staff Sergeant and help train soldiers in weapons qual and I am regularly a range safety officer. 

I am certified as a Red Dot Sight Handgun Instructor through Sage Dynamics and as an NRA Rifle Instructor. Other training certificates I have acquired through Grant LaVelle include; Basic Handgun Safety Course, Proficient 2 Carry, Fight the Dark 2, V Pistol, Introduction to Precision Rifle, Carbine Introduction, Carbine 1 and V Carbine. 

My hobbies include; shooting, camping, hiking and lifting weights.

I believe in the God given right to self-defense by any means necessary. Defending oneself and family requires knowledge, training and mental fortitude. It would be my pleasure to help impart said skills on to you.

Assistant Instructor


Jared Andrews "Thumbs Keller"

My name is Jared Andrews. I possession the worlds longest thumbs.  Big deal you say, until you see my mag changes!  I'm so much faster than Grant and "25 Mike" that all you see is a blur.  Well all joking aside Mike is at least close to my speed, Grant is old and slow (no joke).  I'm a Sage Dynamics Eleanor coin owner, can Grant or Mike claim this, nope.   

Assistant Instructor

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