Home CMMG Range test: Endomag/CMMG 9mm Banshee Upper/Spike's Cal Multi Lower/RDIAS

Range test: Endomag/CMMG 9mm Banshee Upper/Spike's Cal Multi Lower/RDIAS

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300+ rounds/No ftf or fte. Bho with one round remaining which is fixed by trimming a bit off the top of Endomag bho pusher on the follower.
CMMG Banshee 5″ 9mm upper (RDB 9mm bolt assy.)
Spike’s ST-15 Cal-Multi Lower
BAD Ambi Safety Selector
FTF Industries M-16 FCG
Magpul CTR stock
Kynshot RB5005 3.25″ .308 hydraulic buffer
Carbine round wire spring
KAW Valley XL Linear Comp. (Highly recommended. I believe it may reduce the round velocity to subsonic but don’t have equipment to be sure.)
Blazer Brass 115 gr FMJ
Endomags installed in Magpul Gen M3 magazines.

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6 COMMENTS

  1. The manufacturers posted a video that answers questions about breaking in and clearance. They mention a qualified gunsmith to make any tweaks to the Endomag but I used toenail clippers. 🙂
    If you screw it up they will send you a new one.


  2. Check the arfcom forum for the latest. The thread evolves from a bunch of hopeful but skeptical individuals with pre-orders, to problems discovered, to easy solutions to the problems, and finally to folks being confident enough to recommend them. The folks with the CMMG RDB bolt system have not had any real problems since the ejector tab is cut off the Endomag for the Guard/Banshee RDB systems. Most problems seem to have been with the old style 9mm bolt systems. CMMG has got a hit on their hands with their 9mm RDB since you don't have to swap the standard carbine buffer and spring. Mean Arms has a hit with the Endomag since they eliminate the need for a mag block. Excellent matchup between 2 innovative products.

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