So I just loaded up my 1 st rounds for my 300 AR upper and it is not cycling the bolt and would like some help figuring out the problem
Equipment
Brand new New Frontier carbine polymer complete AR lower
Brand new Hardened Arms 300 BLK complete AR upper with 16 inch barrel with pistol length gas system
Gas port 0.093
Troy Claymore muzzle brake
Load = 125g Sierra prohunter with 18.3g H110 as per Seirra load book. (max load per Seirra)
20 rounds run through it so far
So could it be that everything is new and needs a break in?
Is the buffer, or spring to heavy.
Would appreciate your thoughts on this.
Equipment
Brand new New Frontier carbine polymer complete AR lower
Brand new Hardened Arms 300 BLK complete AR upper with 16 inch barrel with pistol length gas system
Gas port 0.093
Troy Claymore muzzle brake
Load = 125g Sierra prohunter with 18.3g H110 as per Seirra load book. (max load per Seirra)
20 rounds run through it so far
So could it be that everything is new and needs a break in?
Is the buffer, or spring to heavy.
Would appreciate your thoughts on this.
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