2010年5月3日 · .625 gives you a continuous barrel profile that is light. If you decide to modify the gas block (drill and tap for an allen to make it adjustable) there is more material in supporting arias. A free floated .625 continuous profile barrel is what I prefer on a general use AR-15 carbine for use at ranges from 0-500 yards.

2018年11月29日 · The BA Hanson .625” barrels are called this due to .625? diameter at the gas block journal. This profile is a thinner and lighter weight version of the original BA Hanson profile. Each BA Hanson barrel comes with a pinned, lo-pro Gas Block already installed which makes them an excellent value.”

2016年4月26日 · 90+ percent of the barrels on the market need a 0.750" gas block. The only ones that use the .625" block are the ones with the thin (M16/M16A1) style barrels, and only a few companies make such barrels. Note there are some really heavy barrels out there that need an even bigger gas block, notably DPMS BULL barrels which use a 0.936" gas block.

2022年7月18日 · The 4140 gas blocks tend to not strip threads as easily as stainless or mild steel gas blocks. Centurion Arms makes a Parkerized 0.625" gas block of 4140 and SLR makes a non-adjustable nitrided 0.625" gas block. Choose one to match the finish of the barrel maybe.

2014年6月6日 · I have seen a number of .625 gas blocks available, but I would really prefer a clamp-on front sight gas block, and not just a low-profile gas block or clamp on railed block. This is the type of sight I like most - a clamp on front sight, except they do not come in small diameters. The clamp on gas blocks are good for me because I don't have to ...

2020年5月21日 · If I go adjustable I’m going with the Superlative Arms adj set screw block. It’s 1.3 tall and only .267 wide at the top. But I’m not sure I want to drop $100 when I can get a non adjustable gas block (and a RCA adj gas key for $50) for around $25. So my question is who makes the lowest profile non adjustable .625 gas block.

2024年7月21日 · Cheapest quality gas block is probably BCM, but they use the same external body/profile on .625 and .750 so the .625 is heavier and makes no sense for you. The Larue is designed with a longer shank for covering up the blemished, unparked sections when you remove a fixed gas block.

2014年3月19日 · PRI, BCM, VLTOR, and probably several more make .625 gas blocks that can be pinned.

2024年10月9日 · PRI flip-up front sight block, cross bolt, .625 gas journal. Excellent used condition with gas tube pin. $140 shipped PP F&F

2016年6月8日 · The SLR gas block dimpling jig is much cheaper but only works with .400 or .450 spacing. The BRD site lists his .460 spacing to work with SLR gas blocks but the SLR dimpling jig spacing is .450. I like that the SLR dimpling jig has two spacing options, not sure why BRD did not do that. I guess you can sell more gas blocks that way.