+1-800-504-5994 Contact Us Check Order Status
About Us Policies
Free Shipping & Free Returns*

EXPEDITED SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Bags, Cases & Packs
  • Hunting Gear
  • Military Gear
  • Optics
  • Police Gear
  • Safety Equipment
  • Surveillance
  • Survival & First Aid
  • SWAT Gear
  • Tactical Clothing
  • Tactical Eyewear
  • Tactical Gear
  • Weapon Accessories
TIP
Shopping Cart

Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope SG61850-AO-B w/ Free S&H

00:55
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
1 of 1 videos
Monstrum Quick Explainer - First Focal Plane (FFP) vs Second Focal Plane (SFP) Scopes
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
1 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
2 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
3 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
4 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
5 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
6 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
7 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
8 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B
9 of 9 images
Monstrum Guardian 6-18x50mm w/ Parallax Adjustment AO Rifle Scope, 1in Tube Second Focal Plane, Black, SG61850-AO-B

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Reticle:
Crosshair
Reticle Focal Plane:
Second Focal Plane (SFP)
Illumination Color:
Green, Red
Color:
Black
Weight:
15 oz
Adjustment Click Value:
1/4 MOA
Adjustment Type:
MOA
Parallax:
Adjustable

Code: MON-RS-MG3RS4-SG61850-AO-B

MPN: SG61850-AO-B

UPC: 810088812040

List: $109.95Save 20%
$87.99

Product Info for Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

The Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope was designed to be the ideal rifle scope for anyone in need of an exceptional improvement for their rifle. These 1" Riflescopes through the optical specialists at Monstrum are made making use of the durable and heavy duty components which you have come to anticipate out of this amazing company. For a very long time, Monstrum has been in the industry of constructing top of the line firearm scopes, and the Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope is definitely the proof of their dedication to supplying you with the most beneficial products for your sighting requirements. One of our priority objectives at Tactical-Store is to make sure you depart with the very best scope for all your requirements, and the Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope is amongst the many scopes that we are happy to showcase. If you are browsing for the best riflescope to satisfy your shooting requirements, then select the Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope.

Specifications for Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope:

Manufacturer: Monstrum
Objective Lens Diameter: 50 mm
Magnification: 6 - 18 x
Reticle: Crosshair
Tube Diameter: 1 in
Reticle Focal Plane: Second Focal Plane (SFP)
Illumination Color: Red, Green
Field of View, Linear: 15.2 - 5.2 ft at 100 yds
Eye Relief: 3.5 - 3.8 in
Color: Black
Weight: 15 oz
Adjustment Click Value: 1/4 MOA
Adjustment Type: MOA
Parallax: Adjustable
Fabric/Material: 6061 Aircraft Aluminum
Water Resistance Level: Yes
Fogproof: Yes
Gun Type: Rifle

Features of Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope

  • Adjustable 6-18 times magnification, for targeting out to 1000 yards and beyond
  • An adjustable objective lens or AO - that allows for sharper focus of the target image, elimination of parallax, and range estimation
  • Precision 1/4 MOA/click windage and elevation adjustments with locking turrets

Package Contents:

  • Monstrum Guardian 6-18x50mm 1in Tube Second Focal Plane w/ Parallax Adjustment AO Rifle Scope
Last updated 2026-09-10 UTC.