That certainly has NOT been my experience with my several ARs from DPMS. .
DPMS puts out a very nice AR - and other components. Perhaps without the glitter of some but tight QC and very resonable prices.
Not my experience, sorry.
DPMS uses very few MIL SPEC parts in their AR's. They make OK platforms for play guns, but they are not taken seriously by tactical and LE units. Critical operations like carrier key staking is often weak. Do they have chrome bores standard? .556 or .223 chambers? M&P bolts. No. No. No.
My personal experiences and those of friends are that DPMS makes an OK gun that strives to deliver, but rarely does.
After the last fiasco where they douldn't get 2 JP triggers to stop doubling on two different varmint guns we wrote them off the "good" list.
For quality second to none in AR's, look at Noveske, MSTN, LMT, Knights, and even lowly old Colt. Colt is STILL the preferred AR manufacturer for LE duty because their stuff just plain works and the parts used are MIL-SPEC where it count.
I would suspect the adjustment of the JP triggers...before discarding the recievers as defective.
JMHO...Jim
+1