A Field Like No Other — A Cold War Missile Base
Missouri Airsoft & Simulation Site (M.A.S.S.) is located on a 30-acre decommissioned Nike missile base, just southeast of the small town of Lawson, Missouri. This isn’t your typical flat field with a few barrels — the terrain is rich with history and variety. The site features multiple concrete buildings, bunkers, fences, and fortified positions left over from its Cold War era, offering a truly immersive environment that you simply cannot find anywhere else in the Kansas City region. The landscape itself is a mix of open fields and dense forest, giving players both long-range engagement zones and tight, close-quarters areas to clear. Whether you prefer to hold a sightline across an open meadow or push through thick woods for a flank, the field accommodates every playstyle. The layout encourages constant movement and tactical thinking, making every game feel fresh and engaging.
Tactical Gameplay and Scenario Variety
M.A.S.S. runs a wide range of game modes that cater to both casual walk-on players and hardcore milsim enthusiasts. Regular open play weekends feature classic formats like team elimination, capture the flag, and objective-based missions. The field’s unique layout — with its buildings, fences, and natural cover — allows for both long-range engagements and intense close-quarters battles inside the old missile base structures. For those seeking a deeper experience, the site hosts large-scale milsim events with night games, themed scenarios, and team-versus-team storylines. The anniversary milsim, for example, pits “Civilian” against “Camo” teams with strict uniform requirements, adding a layer of immersion that goes beyond simple shooting. These events often span an entire day and include night operations, camping, and Sunday open play as part of the package.
On-Site Pro Shop and Rental Equipment
Players who do not own their own gear are well taken care of. M.A.S.S. offers a full rental package that includes an M4 airsoft rifle, a mask, a high-capacity magazine, a battery, a barrel cover, and 1,000 BBs. The rental fleet has been recently updated, ensuring that newcomers and seasoned players alike have reliable equipment to work with. In addition to rentals, the on-site pro shop stocks a solid selection of airsoft accessories, weapons, and gear. Whether you forgot your BBs at home or want to upgrade your setup before a big game, the shop has you covered. The staff is knowledgeable and happy to help players find what they need, whether they are first-timers or veterans.
Built for Groups, Birthdays, and Team Building
M.A.S.S. is an excellent venue for private parties, corporate team-building events, and group outings. The field can be rented exclusively for private groups, allowing teams to run custom scenarios tailored to their skill level and interests. Birthday parties, bachelor parties, and company events all find a natural home here, with the unique missile base setting providing a memorable backdrop that standard party venues simply cannot match. The site also fosters a strong sense of community. Regular open play weekends bring together a friendly mix of local players and visitors from across the Kansas City area. The atmosphere is welcoming and inclusive, with an emphasis on safety, sportsmanship, and having a great time. New players are encouraged to ask questions and learn from more experienced participants.
Community, Staff, and Atmosphere
The team behind M.A.S.S. is passionate about airsoft and dedicated to creating a positive experience for everyone who walks through the gates. The field is run by experienced players who understand what makes a great airsoft day — good communication, fair refereeing, and a well-maintained playing area. They are active on social media, regularly posting updates about weather, events, and field conditions. The site also offers free on-site camping during special events, allowing players to fully immerse themselves in the weekend experience. A designated rest area provides a place to relax between games, grab a snack, and swap stories with fellow players. The overall vibe is laid-back and community-driven, making it easy to spend an entire weekend on the field without ever feeling rushed.
El Monte
