What is the difference between square and round heads

The nut holds the rail to the handguard of the weapon. Where as the rounded head of the bolt seats recessed in the rail to maintain clearance for any picatinny accessories.

Would this fit on an m&p 15? s&w

This rail system fits on any M-LOK handguard. If it has a M-LOK handguard then it will fit.

Will this fit a S&W .357 revolver short barrel?

I would say no. unless your revolver is drilled and tapped to accept picatinny rails

What is the center to center screw holes dimensions?

There are several pieces with varying sizes the smallest still has 2 screw points they are very versatile I applied all but 3 pieces to my weapon and have not had any issue with loosening etc.

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Bontok Single Picatinny Aluminum Accessory Rail Set with T-Nuts & Screws, Wrench- Squared Corner- Aluminum

Product ID: 311591297

🔧Easy wrench installation

🪶Lightweight yet durable

⚙️Precision-machined aluminum

€ 30.25

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Description

🔩 Upgrade your gear with precision and style — don’t get left behind!

MATTE BLACK FINISH - Stealthy, non-reflective surface for professional-grade aesthetics
COMPACT LIGHTWEIGHT - Minimal weight impact for enhanced maneuverability
TOP RANKED AIRSOFT RAIL - Trusted by thousands with a 4.7-star rating and #1 in Airsoft Gun Rails
TOOL INCLUSIVE INSTALLATION - Comes with wrench, T-nuts & screws for hassle-free setup
AIRCRAFT GRADE ALUMINUM ALLOY - Engineered for unmatched strength without the bulk

The Bontok Single Picatinny Aluminum Accessory Rail Set is a precision-machined, aircraft-grade aluminum rail designed for durability and lightweight performance. Featuring a matte black finish and easy wrench installation with included T-nuts and screws, it’s the top choice for airsoft enthusiasts and professionals alike, boasting a 4.7-star rating and #1 rank in Airsoft Gun Rails.

Specifications

ASIN	B08YYMMX8G
Best Sellers Rank	#8,896 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Airsoft Gun Rails
Brand Name	Bontok
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (5,891)
Date First Available	March 15, 2021
Item Dimensions LxWxH	77.17 x 26.77 x 3.94 inches
Item Package Dimensions L x W x H	7.48 x 6.14 x 0.79 inches
Manufacturer	Bontok
Material	Aluminum
Package Weight	0.23 kg
Warranty Description	90 Days Warranty

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€ 30.25

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In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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