Sig Sauer M400 16" .300 BLK Upper Receiver
Availability: Out of stock
Now available from SIG SAUER. SIGM400 .300 BLK16" SRP upper receiver complete assembly.
- .300 BLK
- 16" barrel
- Direct Impingement Gas Operating System with Rotating Bolt
- Hard Coat Anodized Finish
- Magpul MOE Handguard
|Grips||Magpul MOE Handguard (Black)|
|Barrel Length (in)||16.0 in|
|Accessory Rail||Not Applicable|
- Very Accurate
Price Value Quality
- Great Upper!
- I used this upper on my last build and it is very accurate. I am building another and am waiting for them to be back in stock so that I can pick up another. The only change I made was to swap the A2 flash hider for a muzzle brake to help with muzzle rise during 3 Gun shoots. I have build numerous Ar's and used several different uppers but this is my favorite. I am also hooked on the 300 Blackout caliber. the one I am building now is going to be a hunting rifle rather than a competition one. (Posted on 4/3/2015)