2018年10月9日 · The MI set, front and rear, weigh 2.6 ounces, compared to a TROY front/rear dual aperture standard size BUIS set which weighs 3.1 ounces. The TROY is mostly aluminum with steel adjustment and clamp screws while the MI is aluminum in the base but uses steel posts, front and rear, along with steel clamp screws and adjustment screws.

2018年7月8日 · Best rear sight for the money is Matech. Built tough (made of steel) and can be had for $40-50 in the EE. LWRC skirmish sights are pretty neat and ~$150 for the pair.

2009年5月15日 · I would recommend the folding BUIS type so if you get a magnified optics later on you don't have to sell your fixed BUIS for a folding one. If you want a military style BUIS take a look at the Matech, KAC, and ARMS, etc., the ones with the lower folded heights are the KAC and the ARMS model # 40L. The Big Bad BUIS FAQ - tacked thread link

2015年8月22日 · I guess the larger aperture would be OK. I'd think if that set up becomes more popular a standard rifle sight or even the Ashley Express rear would be best suited to quick pick up. I understand it could work at distance but would think a BUIS is going to be most effective and most needed under 100 yards rather than shooting tiny groups at 500.

2021年10月23日 · Most (all?) rear BUIS’s will have been designed with the M4 sight height in mind, so there’s probably not much to be done there, except maybe getting one that’s adjustable for elevation. You can always raise the height of the front post by unscrewing it, but at some point the sight picture will become a bit odd, with the flange sitting up ...

2017年3月12日 · The flip cap is in contact with the sight and doesn't clear it freely. I see two options, different Flip cap, or a lower profile rear flip up sight. I'd like to keep the Vortex flip cap on the eyepiece (the objective flip cap is a different matter), so have been researching rear sights.

2015年1月28日 · KAC Micro BUIS Front Weight*: 1.5 oz Stowed length**: 50 mm Stowed height above rail: ~9.5 mm throughout; 10 mm @ knob Material: Steel base, aluminum flip-up *Preferred to use second-hand measurements over manufacturers' specs **All dimensional measurements are my own Rear (300 M version) Weight: 1.35 oz Stowed length: 55 mm

2012年1月8日 · Otherwise, I have seen folks mount their rear sight in front of the ACOG and zero in that position. As stated, get one of the quick release mounts for the ACOG, so that in the event you need to use the BUIS, you can remove the optic. With the BUIS in front, you should only be using it in the event the ACOG is inoperable for some reason.

2011年5月18日 · It doesn't matter. It works like the two different apertures on a typical A2-style rear sight. The 300m aperture is a smaller hole for more precise shots while the 0-200m aperture is for closer shots. You would always want to zero with the 300m aperture since it's a more precise shot. I figure the same would go for this sight.

2006年10月15日 · If I have time, the BUIS gets moved to the first rail slot (where it's zeroed) and I can use the rifle with iron sights. The LaRue BUIS is a solid piece of work and I recommend it to anyone who doesn't need a folding rear sight. BTW, I do shoot NTCH. I start loosing the ELCAN if I mount the BUIS behind it. BSW