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Gerber MP1 - AR Weapons Multi-Tool - Butterfly Opening Multi-Tool
MP1-AR Weapons Multi-Tool
MP1-AR Weapons Multi-Tool
Gerber MP1 - AR Weapons Multi-Tool - Butterfly Opening Multi-Tool
MP1-AR Weapons Multi-Tool
MP1-AR Weapons Multi-Tool

MP1-AR Weapons Multi-Tool

Butterfly Opening Multi-Tool

Item: # 31-002779

Simple doesn't have to mean boring. On the contrary, the MP1 Multi-Tool is proof that when done with care and 12 professional-grade components, simple can be all you need. A butterfly open design, high quality carbon steel, and spring-loaded pliers are only the beginning.


QUESTIONS? Contact Gerber


    • Closed length: 4.3 in.
    • Overall length: 7.3 in.
    • Blade length: 2.75 in.
    • Weight: 9.7 oz
    • Spring-loaded, forged steel needle nose plier jaws
    • Wire cutter
    • Wire stripper
    • Full-size serrated blade
    • Full-size fine edge blade
    • Takedown pin punch
    • Carbon scraper
    • Dental style carbon pick
    • Magnetic bit driver
    • MOLLE compatible coyote nylon sheath
    • 12-piece bit set, includes
      • Torx bits
      • Hex bits
      • Philips bits
      • Front sight adjustment tool
      • Trigger assembly pin punch
  • Warranty

Gerber’s eFECT was the world’s first military-grade multi-tool designed specifically for the AR-15 / M4 / M16 weapon system. The MP1-AR is the next evolution; a full-size multi-tool featuring implements needed for cleaning and maintaining the weapon system, along with vital everyday tools for the field. The MP1-AR features a pin punch for take-down pins, a contoured carbon scraper for cleaning the bolt and inside the bolt carrier, and a dental style carbon pick for cleaning the bolt’s ejector area and other hard-to-reach parts of the weapon.


The MP1-AR features a magnetic bit driver which accepts standard sized bits and is accompanied by a bit set that includes flat, Phillips, hex and Torx bits commonly needed for adjusting optics and accessories. The bit set also includes a front sight adjustment tool for iron sights and a pin punch for trigger assemblies. Also found on the tool are full-size serrated and fine edge blades, and spring loaded jaws made of forged steel, providing the ultimate in jaw strength. The MP1-AR also includes a MOLLE compatible coyote nylon sheath. Proudly built in Portland, OR.

  1. Spring loaded needle nose pliers
  2. Regular pliers
  3. Wire cutter
  4. Wire stripper
  5. Tool lock
  6. Serrated blade
  7. Pin punch
  8. Pick scraper
  9. Carbon scraper
  10. Bit driver
  11. Fine edge blade
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Overall Rating

  • 4
  • |4 out of 5 stars
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  • 5 5
  • |JUN 8, 2019
  • |BY: , great product

Unlike the person who reviewed this and said it doesn't have a sight tool, I have this, it does. Is held in the case along with extra bits. I think the saw or serrated blade is a bit overkill.

  • 4 5
  • |MAY 4, 2019
  • |BY: , 15Y AH-64D Avionics/Armt repairer

The BEST multi-tool for avionics/armament tasks in the Army aviation.
Comparing it with other Gerber and Leatherman models (including army issued) I can assure you that you cannot find any better options.
1. Standard size bit driver (but you have to get couple more additional hex bits - 5/32 is #1 choice here)
2. Spring loaded needle nose pliers which works perfectly with .032 lockwire and with the most male pins in the cannon plugs when you have to straighten them or to lock them in its place.
3. Pick scraper works perfectly with outer shielding on coax cables or regular wires.
1. Tools get loose with the time but you can still work with them with no issues.
2. After 2.5 years of daily use the pliers locking tab broke off on one side but I got the multi-tool replaced with Gerber Lifetime warranty with no question asked.

  • 4 5
  • |DEC 24, 2017
  • |BY: , Great tool - bits could be better but concept is awesome

Pliers are great. Am able to open blade or serrated blade with one hand and it locks into place. Magnetic bit with large hex is long enough to remove or tighten hex screw for AR pistol grip. Sight tool works perfectly. Pouch is awesome. Only complaint are the various bits - would be nice if the size of the torx or hex was etched into side of the bits. Not convinced they are the best tool grade bits either. One was pretty worn after a couple uses. Easy enough fix to buy some high quality bits but kinda annoying to have to do that.

  • 5 5
  • |MAY 14, 2016
  • |BY: , Cpl

This is my go too multi tool for when out in the field and the time comes to perform maintenance on my weapon, also love the fact the pliers are spring loaded.

Drill bit set is very good as it has considerable reach and can be swapped out on the fly, Sheath even matches my plate carrier hahaha.

Great quality and has all the tools a soldier requires from a multi tool IMO.

Good Job Gerber

  • 5 5
  • |FEB 12, 2016
  • |BY: , Gear Reviewer

I have a MP1 that I am starting to review professionally and I agree with the SGM, and the CPT, the MP1 is a solid tool for use with the AR15. The fact it comes with a separate bit pouch built into the sheath is a nice feature. Being able to attach it to molle webbing is a nice feature. Only 1 thing I miss is a castle nut wrench. But with the screwdriver and a rock you can make a castle nut lock down. Adapt and overcome. I also love the spring loaded pliers, helps with hand fatigue

  • 5 5
  • |AUG 27, 2015
  • |BY: , Captain

It has a front sight post adjuster "Blaine". you get a 0 for attention to detail. Drop and give me 20.

  • 1 5
  • |JAN 19, 2015
  • |BY: , none

Multi-tool for AR platform without sight tool? Doesn't seem to meet your usual high standards.

  • 5 5
  • |DEC 22, 2014
  • |BY: , Sgt. Major 4th Marine Logistics Group

I have been given a pre-prod model for real life field testing. It's a sturdy and solid tool and all of the implements are actually useful, not like some tools from other more obscure manufacturers.

Also, it exudes quality and attention to detail is second to none. Highly recommended.

Big thumbs up.

Geoff Metak Jr.