Leapers UTG PRO Model 4/15 Drop In Quad Rail AR-15 Handguard - Carbine - Black

As far as budget drop in quad rails go, these are excellent. They feel solid, stamped with made in USA.

They were a bit snug and hard to get on my SIG M400 Enhanced, and took a bit of 'persuading' with a swift mallet smack to sit in fully. There's a bit of a trick to getting them on (if it's snug on your rifle).

Aside from that, it comes with several quarter rail covers, I think like 10? 12? I've already put them away.

Overall I'm very satisfied with the product. No issues at the range.

I read this is the upper drop in for my sig.. it work great.

This is a quality drop in handguard set. Easy to install if you read the instructions first. The handguard covers install fairly easily.
I would order again.

Brand new AR owner - and this install was simple. This a 4 sided picatinny rail handguard

This quad Rail fit my AR 15 perfectly. Thank you Primary Arms.

Primary Arms service is Awesome. Nobody even comes close. This drop in quad rail fits as tight as my KAC RAS did in the military. Zero movement.

First of all credits to Primary Arms for they excellent delivery speed. This rail fit perfectly in place of the stock at rounded guard, it as in fact much easier to install than the old guard was to get off (not having a delta ring tool). Sits firm and sturdy with less wiggle ( in this case non) that the original A2 guard, lines up nicely.

I installed it effortlessly in seconds! Fits perfectly snug and is well made and rugged.

SO MUCH RAIL SPACE! Two thumbs up! Love it.

Quick delivery and well made easy to install Quad Rail. Fit perfectly on my M&P 15 Sport rifle. More aggressive look than the stock handguard. Cant wait to mount some accessories!