Sig MCX 9" SUR300 Suppressed Upper Receiver 300BLK

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SKU:
UAMCX-9B-300B-SRD
UPC:
7.99E+11
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  • Sig SUR300 Suppressed Upper Receiver 300blk
  • Sig MCX 9" SUR300 Suppressed Upper Receiver 300BLK
  • Sig SUR300 Suppressed Upper Receiver 300blk
MSRP: $2,640.00
$2,379.00
— You save $261.00
Frequently bought together:

Description

Sig Sauer's Suppressed Upper Reciever (SUR) in .300Blk is a complete MCX upper with bolt and charging handle included. Compatible with MCX and MCX VIRTUS systems, this upper is also compatible with most standard M4/AR-15 lower recievers. Sporting a 9 inch 300BLK barrel with a pinned and welded titanium suppressor, this upper comes in at a "barrel length" of 16.375" meaning that it does not require a SBR lower. This means that the SUR300 is a fantastic way to upgrade that old lower receiver you have laying around with the MCX VIRTUS piston operating system and a 2 position gas valve!

To that end, this upper ships with a MATCHLITE DUO two-stage match-grade drop in trigger as well as an AR 1913 receiver adapter for use with a folding stock. You really can't ask for a better package deal to upgrade an existing AR lower receiver!

Lastly, the silencer included with this upper receiver is proprietary to this system and is optimized for use on .300BLK.

Specs:

  • Caliber: .300BLK
  • Receiver Material: 7075 Aluminum
  • Receiver Finish: Mil-Spec Type III Hard-Coat Anodize
  • Barrel Material: Cold Hammer-Forged Carbon Steel
  • Barrel Finish: Nitride
  • Barrel Length: 9"
  • Barrel Twist: 1:5in
  • Suppressor Material: Titanium
  • Suppressor Finish: Black DLC
  • Mount: Pinned and Welded
  • Weight 5.7lbs

Included:

  • QD Sling Adapter
  • MATCHLITE DUO Trigger
  • M4/AR15 1913 Receiver Adapter and Folding Stock Adapter
  • Owners Manual
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Additional Information

FFL:
Yes
FFL_FIREARM_TYPE:
NFA
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1 Review

  • 5
    Just in time

    Posted by 4Sig on 26th Feb 2020

    I was going to upgrade my somewhat 'old' lower. Looked at various options. Decided to give this dedicated suppressor setup a try.

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