- By Pete Moore
- 0 Comments
- Last updated: 19/12/2016
As some of you will know, I’m in the process of pimping my SGC Speedmaster straight-pull AR15. Like most things, it started small, with an idea to free-float the barrel to realise its full accuracy potential. My first mistake was not using a 2nd hand float tube, if I had, it would have probably stopped there. But no, a Trinity Force unit proved much better and cooler looking and I was off! The Magpul MiAD pistol grip was left alone, as it’s probably the best design there is, but that old A2 butt just had to go darling!
My thoughts strayed to something with both comb height and length of pull (LOP) adjustments that would allow me to improve and tailor my shooting positions for all uses. The prime contender was Magpul’s PRS® Precision-Adjustable Stock. This big, clubfoot design was perfect, apart from its weight and price and it looked like the A2 would stay, when a conversation with Wayne at North West Custom Parts revealed that a company called LUTH-AR offer their MBA-1 (Modular Buttstock) that addressed my two issues with the PRS.
The MBA-1 is made of glass-filled nylon material and of skeleton design, which reduces the weight to just 1.26 lbs. Adjustments are made by thumbwheels; the rear controls LOP, which is 10 3/8” closed and 11.5” fully open. The L-shaped butt pad is retained in position by vertical slots, so will not collapse under pressure. The clam shell style comb offers an inch of vertical movement and is controlled by the forward wheel and uses the same retention slots as the butt. It’s also possible to move the comb back and front a little by removing the top and bottom screws and physically shifting it. One thing I did find out was the build precludes moving it fully forward. This was solved by filing material off at the bottom to allow this to happen. LUTH includes an Allan key to do so which clips into the butt.
Fitting is simple; remove the A2 butt by taking out the screw in the rear of the buffer tube and slide on the MBA-1. Depending on the design, your original screw might be longer and as I discovered if used, short strokes the bolt. LUTH supply a shorter one, which solves that problem! Along with the adjustments, the design shows a concave gripping surface at the front, which is great for prone use. QD sockets are moulded in on either side and compatible swivels are optional, as is a fixed sling loop that fits into the rear. There’s also a telescopic MBA-3 Carbine Stock for CAR15-types with all the same features, though the butt plate offers 3-way pad adjustment. LUTH also offer nonadjustable rifle and carbine models too - SKULLATON MBA-2 (rifle) and MBA-4 (carbine).
CONTACT: North West Custom Parts, 0161 408 1155 www.nwcustomparts.com www.luth-ar.com
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