Guns, Ammo & Gear
Pistols, rifles, ammo, accessories and BYRNA non-lethal products. Browse in-store or call ahead.
Shop Now
940 Grand Blvd., Unit A, Deer Park, NY 11729
631-351-6473
Serving Deer Park & NYC since 2007 — NRA Certified, Veteran Owned, FFL Licensed.
Gun shop, firearms range, CCW classes, security training and PI services — all in Deer Park, Long Island.
Gun shop, range session, class or PI consult.
Online booking or call 631-351-6473.
By NRA and DCJS certified instructors.
Armed with skills, permits and credentials.
Matt Seifer · Founder
Guardian was founded by Matt Seifer, a U.S. veteran and licensed NRA instructor. For over 18 years we've been Long Island's most trusted source for firearms retail, CCW training, security consulting and private investigation. Every course, every sale, every case — handled with military precision and real-world expertise.
We don't just sell guns. We protect our community — with discipline, instruction, and credentials that hold up in the real world.
Starting at
$199
Starting at
$349
Starting at
$549
Not sure which package is right for you? Call us at 631-351-6473 — we'll help you choose.
Organizations and agencies that train with Guardian
Use the form to ask about inventory, classes, range time, security training or investigations. We typically respond within one business day.
Serving Long Island and NYC — walk in or book online in 60 seconds.
940 Grand Blvd., Unit A, Deer Park NY 11729
Mon–Sat 10am–6pm · Sun 12pm–4pm
Get Directions