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Posted: 12/15/2011 1:21:31 PM EDT
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hello there i am trying to get a ar together and there are several companies out theres that have great choices to chose from and was wondering if you could help me out with two of them im looking at getting. I am doing a budget build for both the upper and lower receiver i have decide on the company i am using for the lower but cant decide on the upper, the two companies are palmetto state armory and surplus ammo and arms. I have searched several forums researching reviews on both uppers and cant really find anything on either of them.
The first is a Surplus Ammo & Arms M4 16" Free Floated Quad Rail Upper for $409.99 the specs are Caliber: 5.56mm NATO Bolt & Carrier Group: SAA Mil-spec Upper Receiver: Aero Precision Upper Receiver Material: Forged 7075T6 A3 Flattop with T-Markings & American Flag Gas Block: Standard Height Single Piccatinny Railed Front Sight: None Barrel Length: 16" Barrel Material: 4140 Chrome Moly Barrel Finish: Matte Black Barrel Profile: M4 Standard profile .750" Diameter Twist Rate: 1:9 Flash Hider: Standard A2 Handguard: Surplus Ammo & Arm's Free Floating Quad Rail M4 Style Feed Ramps, Complete with charging handle http://www.surplusammo.com/product_images/c/331/SAA_16_FF_UPR_1__28263_zoom.JPG. Second one is a Palmetto State Armory 16'' CMV Chrome-lined, M4 for $379.99 Caliber: 5.56mm NATO Bolt & Carrier Group: psa Mil-spec Carpenter 158 steel Upper Receiver Material: Forged 7075T6 A3 Flattop with T-Markings Gas Block: Standard Height Single Piccatinny Railed Front Sight: f-marked, front sight post Barrel Length: 16" Barrel Material: 4150 CMV Chrome-lined Barrel Finish: Black Barrel Profile: M4 Standard profile Twist Rate: 1:7 Flash Hider: Standard A2 Standard handguard http://palmettostatearmory.com/images/8995.jpg the only problem i see is that i still have to get sights for the upper either it be front and rear or just a rear sight. i hear good things from some people but most dont own one or use one. i am mostly just using it for shooting/plinking i am not trying to get the best of the best for a rifle but dont want cheap parts either. i was going to get a 7.62x39mm upper from bushmaster which is 519 but that might be for a later build. only have 650 for a rifle which can be done i just need to chose a upper from a company. Any opinions about what you guys think. Thanks you for your time. |
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Quoted: why do u state that about the psa upper just curious I'd probably go with the PSA also.... Their barrel is chrome lined so it will be much easier to clean, last you longer and be more corrosion resistant. Although the chrome moly barrel on the other one will be slightly more accurate. The PSA is also has the pinned FSB, that's more of a personal preference for me though, I'm just not a fan of the set screw railed gas block for mounting my front sight on. You also need to keep in mind the bullet weights you going to shoot, PSA is 1:7 and the other is 1:9 twist so the range of bullets they will stabilize is going to differ somewhat. |
| 4150 chrome lined barrel vs 4140 chrome moly barrel, Carpenter 158 steel shot peened hpt/mpi bolt, vs "mil spec" BCG, 30.00 less, and you only need to buy a rear sight. the free float rail is nice, but something you could put on later if you "need" to add a bunch of stuff to your rifle. |
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thank you for your replies the other upper i was looking at was a dpms a3 flatop lite 16 for same price as the psa but they sold out of it
i know the 1.7 twist is for the heavier grain bullet such as 70 grains and up and the 1.9 twist is for the lighter grain bullet such as 55 grain or 65 grains. i am mostly going to shoot 223 out it such as the 55 grain but will sometimes show the 556 nato round too. the lower im putting the upper on is a plum crazy lower i know i might get crap from people about choosing that lower because its a all polymer lower and that people think it wont last or is crap compared to other lowers. the only thing i cant find out about the psa upper is what type of barrel profile it uses such as a hbar, light, or another profile it sounds like the psa is the one people like more i dont know much about the metals used for ar rifles except for the barrel being chromed line making it last longer and bcm chromed lined for better cleaning otherwise im clueless about the differences between the different types of metals used. |
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