AR lowers and LPKs that I have built since November 08...
1.) DPMS with DPMS LPK... All parts in kit, very rough trigger (really bad actually).
2.) Rock River Lower with M&A Parts LPK...Much smoother trigger compared to DPMS. Missing bolt catch roll pin but had 2 extra rear take down springs and detents.
3.) Calvary Arms Lower with M&A Parts LPK...Same parts missing as ABOVE.
4.) S&W M&P Lower with Double Star LPK... Smoothest trigger than all the above mentioned and all parts were in the kit.
5 thru 8) Rock River Lowers and Double Star LPKs... same as 4.)
I got a chance to work on (strip and clean) 3 Satg ARs and 1 S&W M&P15 that were purchased as complete rifles and they all had the same markings on them as the Double Star kits and had the same "feel" in the trigger pull. I have an older lower receiver with a Colt LPK installed and it is smooth but the trigger pull seems to be about a pound heavier.
I have about 1800 rounds through the S&W M&P with the Double Star kit (#4)and it is smooth and there have been no reliability issues. I am not going to say that the Double Star kits are better than anything else but I have a couple more lying around and I will use them and when they are gone, I most likely will buy them again. I paid $64.00 Each for them when we did a small group buy of 10 Rock River Lowers.
"Perfect Practice Makes Perfect"
"There are 550 million firearms on this planet. That's one firearm for every 12 people. The question is... How do we arm the other 11?" Lord of War.
"I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them." Thomas Jefferson
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