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Old February 11, 2019, 02:09 PM   #1
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Polymer Front Sight on Saint Pistol in .300 BLK?

I have a Springfield Armory AR-15 Saint Pistol in .300 Blackout inbound.

I will have a red dot sight as primary but will want back up sights. I like the price point on polymer sights but am worried the front sight will get too hot mounted on the top front rail of the hand guard.

Anyone have a polymer backup front sight on an AR pistol?
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Old February 11, 2019, 02:19 PM   #2
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Ive used Magpul BUS for years on both 300blk SBR’s and 556 guns. No issues
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Old February 11, 2019, 02:25 PM   #3
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Old February 11, 2019, 04:14 PM   #4
Uncle Malice
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On the rail is absolutely fine. As long as it's not one of those railed gas blocks, you're good to go.
Pistols:Suarez Glock 19 G4 w/ RMR | Glock 26 G4 | HK USP 9 | HK P2000 | HK VP9 SK | HK P30 | CZ Shadow 2 | CZ P-10 C
Rifles: DDM4 | SGL 21 | PSA PDW SBR | ASA Side-Charger SBR | CZ Scorpion K SBR | Aero M4E1 9" 300blk SBR | Angstadt Jack9 SBR | Savage Mark II FV-SR
Shotguns: Mossberg 590A1 20" SP | Mossberg Shockwave
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Old February 12, 2019, 03:59 PM   #5
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If you're talking about the standard free float tube SA puts on the Saint 'pistols', you'll be fine. (As long as you're not doing mag dumps and overheating the firearm, anyway.)

Gas block = could be a problem.

I'm not sure where they went. Perhaps they were on a rifle that I sold... But I had some of the early Magpul knock-offs from ... Tapco(?). I actually preferred those plastic sights to standard sights, and even some aftermarket options. They were cheap and looked the part, but worked very well.
Don't even try it. It's even worse than the internet would lead you to believe.
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