Originally Posted by
taekwondopreacher
Put 20 rounds through the 12.5" Criterion last night. SBA4/A5 system,Vltor MUR, 11" Larue Quad rail, FCD 6315, very much balanced to the rear. Soft shooting with Norma 55gr FMJ, 3:00 ejection. The Larue quad rail gets replaced with the MLOK version tomorrow which will further shift balance to the rear. I believe it's a 5oz difference on paper. I started by shooting one round, wet patches followed by dry patches. By round 5 it was three wet followed by one dry. I did this for 15 rounds, then shot 5 rounds and was out of time. Impulse seems flat and soft. I'll post again after another 200 rounds.
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