KE Arms USM4 Select Fire 5.56mm NATO 16" Barrel 30 Round Mag Semi Automatic Rifle 1-56-05-100

The KE Arms USM4 Select Fire is a fully featured tactical rifle, ready to go out of the box for duty, competition, or hunting. From the tip of the effective Vortex flash hider to the toe of the Magpul CTR buttstock, this weapon means business. Built around a chrome lined 16" M4 carbine profile barrel, the USM4 Select fire includes a host of accessories geared towards durability and modular use. Complete with flip up iron sights, Magpul furniture, and a KeyMod rail system, the carbine represents the cutting edge of the tactical market.



This exceptional rifle also features the Tac-Con 3MR trigger system. In the first selector position, the 3MR offers a crisp 4.5 pound match grade trigger pull with virtually no take up or overtravel. Flip the included billet machined selector switch to the third position, however, and things get interesting. The 3MR uses the momentum of the moving bolt to aid in resetting the trigger, allowing the shooter to accomplish extremely rapid follow up shots. Never before has a trigger system allowed such rapid rates of fire.



Specifications :

- 5.56 NATO chamber (accepts .223 Remington)

- 16" Barrel

- VLTOR Mod 3 Charging handle

- M4 Feed ramps

- 12" Delta-P KeyMod handguard

- Carbine length gas system

- Billet gas block

- M16 Carrier group

- H2 Buffer

- 1:7 Twist rate

- HP/MP Tested bolt

- Chrome lined bore and chamber

- 5 PMAGs

- Tactical sling

- Tac-Con Trigger

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