If you already have a 5.56 lower, a CMMG Banshee 9mm upper is a sweet quick swap option. I installed a standard carbine spring and Kynshot hydraulic buffer into my Spikes Cal-Multi lower and it is a good combo for 5.56, 300 BLK, and 9mm. Endomag inserts for Magpul 5.56 magazines eliminate the need for magwell blocks. They run well. I have thousands of rounds downrange and no problems. Plus I can switch between 5.56, 300 BLK, and 9mm uppers in seconds at the range.
Kaw Valley fatty comp works well. Waiting since October 2018 for the can stamp.
Kaw Valley fatty comp works well. Waiting since October 2018 for the can stamp.
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